Human parasitology review questions and answers
Question one
(1) Multiple choice questions
1. Biogenic worms because of them: C
A．must develop outside
B．Must be infected by mouth
C．There must be an intermediate host in the life history
D．No intermediate host in life history
E．None of the above statements are true
2. Carriers refer to: B
A．patient
B．A person infected with a parasite without showing clinical symptoms
C．non-immune person
D．susceptible
E．none of the above
3. The fastest growing egg of the following is: D
A. hookworm eggs
B．roundworm eggs
C．Whipworm eggs
D．Pinworm eggs
E．ginger beetle eggs
4. The worms that can cause migratory larvae are :D
A．roundworms
B．Pinworms
C. filarial
D．G. stinkii
E．Taenia solium
5. The diagnostically significant worms in the adult stage are: D
A．Filarial
B．Pinworms
C. Clonorchis sinensis
D．Schistosoma japonicum
E．lung fluke
6. The nematodes that live in the ileocecal area are: D
A．roundworms
B．Filarial
C．Trichinella spiralis
D．Whipworm
E．hookworm
7. Fresh feces have contaminated food, and people may be infected after eating: E
A．roundworms
B．Whipworm
C．hookworm
D．Trichinella spiralis
E．None of the above is possible
8. The main pathogenic role of pinworms is: C
A．Get plenty of nutrients
B．likes the habit of drilling
C．special spawning habits
D．Intestinal wall damage caused by adult worm fixation
E．Stimulation by parasite metabolites
9. The main basis for visually distinguishing Ancylostoma americana and Ancylostoma duodenum: C
A．Insect size
B．muzzle in mouth pocket
C．body shape
D．Oral pouch and copulatory umbrella
E．The location of the vulva
10. The main pathogenic stages of worms parasitic in human muscle are: C
A．hookworm
B．Filarial
C．Trichinella spiralis
D. Schistosoma japonicum
E．Clonorchis sinensis
11. Microfilariae are the larvae of which parasite: B
A．hookworm
B．Filarial
C．Trichinella spiralis
D．Schistosoma japonicum
E．Echinococcus granulosus
12. The parasites that humans can serve as both final and intermediate hosts are: D
A．Filarial
B．Clonorchis sinensis
C．lung fluke
D．pork tapeworm
E．beef tapeworm
13. Pinworm infection is due to: C
A．Exposure to filarial larvae in soil
B．Filamentous larvae pass through mosquitoes
C．Oral cannibalism of eggs
D．Ingestion of cysts containing larvae in muscle
E．Infectious eggs pass through drinking water
14. The larvae of hookworms that invade the human body are: C
A．rod-shaped larvae
B．Microfilaria
C．Filamentous larvae
D．Cereus stage larvae
E．none of the above
15. Which parasite is infectious to humans after its eggs are released: D
A．hookworm eggs
B．paragonimiasis eggs
C．Whipworm eggs
D．roundworm eggs
E．Taenia solium eggs
16. Which worm can cause anemia: B
A．roundworms
B．hookworm
C．Schistosoma japonicum
D．Cysticercus suis
E. filarial
17. Ascaris adult parasites in the human body: A
A．small intestine
B．cecum
C．colon
D．the lungs
E．inferior mesenteric vein
18. The parasite that causes elephantiasis is: E
A．Schistosoma japonicum
B．lung fluke
C．Trichinella spiralis
D．hookworm
E．Filarial
19. Parasites whose eggs can be found in the patient's stool are: B
A．Echinococcus granulosus
B．hookworm
C．Trichinella spiralis
D．G. stinkii
E．none of the above
20. Which worm lives in the lymphatic system: B
A. Hookworm
B．Filarial
C．Clonorchis sinensis
D．beef tapeworm
E．Trichinella spiralis
(2) Fill in the blanks
1. Among the worms parasitic on humans, the eggs are the smallest (Clonorchis
worms), the largest being (Faxina brucei).
2. Humans are the (abnormal host) of G. skrenzii, the parasitic stage is (children), and the main cause is (larval migratory disease). The clinical features are ( ). The stage of human infection is (metacercariae).
3. The eggs produced by the female Schistosoma japonicum in the mesenteric vein are mainly deposited in the (liver) and (intestine); some can be excreted from the (intestinal cavity), and a few are deposited in tissues or organs other than the portal venous system along with ( ).
4. The adult worms of Taenia solium parasitize in the human body (upper small intestine), and its larvae are called (cysticerci), which can parasitize in the human body (brain), (eye) and (subcutaneous muscle).
5. The uterine branches of the gestational segment of Taenia solium are (7-13) branches on each side, while those of Taenia saginata are (15-30) branches.
6. Humans suffer from cysticercosis in three ways: (autoin vitro infection), (autoin vivo infection) and (alternative infection).
7. People who eat Taenia solium eggs and Echinococcus granulosus eggs by mistake can suffer from (cysticercosis) and (hydatid disease) diseases.
8. Sparganosis are the larvae of (Sparganum mansoni) that cause disease (Sparganosis) in humans.
9. Whether the human body has clinical symptoms after hookworm infection is mainly related to (number of infections), (nutritional conditions), (health status), and (immunity).
10. Symptoms and signs of advanced filariasis include (elephantiasis), (hydrocele), (chyluria) and so on.
11. Filarial larvae reside in (pulmonary vessels) during the day and emerge in (peripheral blood) at night.
12. The main distinguishing points of Bancroft's and Malayan microfilariae under the light microscope are (body), (body nucleus), (head space) and (tail).
13. Conjunctival sucking nematodes are parasitic in humans (eyes) and are transmitted by (arthropod vectors).
(3) Name Explanation
1. Soil-borne worms 2. Biogenic worms 3. Larval Migratory Disease 4. Transfer host 5. 6. Nocturnal periodicity. Elephantiasis 7. Cercariae 8. Metacercariae9. Six hook larvae10. Cysticercus 11. Echinococcus 12．Sparganum
(4) Questions and answers
1. What diseases do filarials cause in the human body, and what are the characteristics of the lesion sites of the two filarials?
2. What are the prevalent causes of Clonorchiasis sinensis?
3. What are the pathogenic effects of Paragonimus westermani and Paragonimus stinkii?
4. Briefly describe the pathogenicity of schistosome eggs?
5. Briefly describe the harm to humans of zonal worms (taenia solium) and cysticus pigs?
6. Briefly describe the similarities and differences between the life histories of Taenia saginata and Taenia solium, and how to distinguish the species from the morphology in diagnosis?
7. Which hosts can humans be used as the host of Taenia mansoni? What is the main development period to cause the disease? What are the lesions caused?
8. Briefly describe the epidemic characteristics of Echinococcus granulosus?
Question two
1. Multiple choice questions (1 point for each question, 20 points in total)
Type A questions are also called best choice questions. Ask a question first, followed by a list of 5 answers: A, B, C, D, E. Choose the best answer from the 5 alternative answers according to the question stem.
1. Regarding the relationship between the parasite and its host, which of the following is incorrect: (B )
A. Human is the intermediate host of Toxoplasma gondii
B. Wesleyan
The first intermediate host of the genus trematode is the snail
C. Wild boars as relay hosts for U.
D. Cattle are the hosts of Schistosoma japonicum
E. Humans are intermediate hosts of malaria parasites
2. Most of the immune types after human infection with Plasmodium are: (A)
A. Insect immunity
B. ADCC Acquired Immunity
C. Eliminating immunity
D. Concomitant immunity
E. Innate immunity
3. Parasites that require only one host to complete their life cycle are: (C)
A. Filaria B. Toxoplasma gondii C. Roundworm D. Plasmodium E. Clonorchis sinensis
4. The number of mature cyst nuclei of Giardia lamblia is usually: (C )
A. 1 B. 2 C. 4 D. 5 E. 8
5. The most important hosts for Trichinella spiralis are: (E)
A. Human B. Dog (kala-azar) C. Cat D. Cattle E. Pig
6. Protozoa whose life history has alternation of generations are: (B)
A. Entamoeba histolytica (Histolytic amoeba) B. Plasmodium vivax (Plasmodium vivax)
C. Giardia lamblia (Giardia lamblia) D. Trichomonas vaginalis (Trichomonas vaginalis)
E. Leishmania donovani (Leishmania donovani)
7. For patients suspected of having kala-azar, the preferred method of examination is: (B)
A. Immunological examination B. Bone marrow aspiration smear examination
C. Peripheral blood smear D. Liver biopsy
E. Lymph node aspiration smear
8. The main reason why Schistosoma japonicum eggs can enter the intestinal cavity and be excreted with feces is: (E)
A. Increased intestinal peristalsis B. Increased intra-abdominal pressure
C. Increased intravascular pressure C. Stimulated by rough food
E The role of the secretion of miracidia in eggs to damage the intestinal wall
9. Pathogens only develop but do not reproduce in insects: (D)
A. Leishmania donovani B. Yersinia pestis (reproduces) C. Plasmodium (develops and reproduces) D. Filaria (develops but does not reproduce) E. None of the above
10. Currently, the drugs of choice for the treatment of Entamoeba histolytica are: (E)
A. Sea Qunsheng (filaria) B. Altimazole C. Praziquantel (Taenia mansoni) D. Metronidazole (acute or chronic intestinal amoeba) E. Paromomycin
X-type questions are also called multiple-choice questions. First list a stem, followed by a list of A, B, C, D, E 5 alternative answers. Choose 2-5 correct answers from the answers according to the requirements of the test questions
11. Food or drinking water contaminated by fresh human feces may be infected: (CDE)
A. Toxoplasma gondii B. Roundworm
C. Entamoeba histolytica D. Giardia lamblia
E. Taenia solium
12. Parasites that can cause hepatosplenomegaly include: (BDE)
A. Fasciola brucei B. Schistosoma
C. Filaria D. Leishmania donovani
E. Toxoplasma gondii
13. Which of the following parasites can cause zoonotic parasitic diseases: (BCE)
A. Plasmodium B. Schistosoma
C. Trichinella spiralis (pig) D. Ascaris lumbricus
E. Toxoplasma gondii
14. Parasites that can be directly infected through the skin are: (ABCE)
A. Hookworm (fingers and toes) B. Schistosoma japonicum "Skin"
C. Toxoplasma gondii (eyelashes) D. Taenia solium
E. mansoni
15. The parasitic protozoa whose life cycle is insect-borne type include: ( AD )
A. Leishmania donovani) Bailing) B. Toxoplasma gondii
C. Vagina
Trichomonas D. Plasmodium (mosquito)
E. Entamoeba histolytica
16. Which of the following are opportunistic parasites: (CE)
A. Ascaris lumbricoides (roundworm)
B.Plasmodium falciparum (Plasmodium falciparum)
C.Giardia lamblia (Giardia lamblia)
D. Taenia solium (Taenia solium)
E.Toxoplasma gondii (Toxoplasma gondii)
17. Parasitic worms whose eggs cannot be detected in the patient's stool are: (ADE)
A. Gynosoma stinkii B. Schistosoma japonicum
C. Paragonimus wescheri D. Trichinella spiralis
E. Echinococcus granulosus
18. The control principles of soil-borne worms include: (BDE)
A. Prevent insect bites B. Strengthen health education
C. Do not eat raw or semi-raw meat D. Manage feces and water well
E. Eliminate flies, cicadas, etc.
19. The parasites whose larvae pass through the capillaries of the alveolar wall and enter the alveolar space in the life cycle include: ( AD )
A. hookworm B. bancrofti
C. Taenia saginata D. Roundworms
E. Schistosoma
20. The arthropods that only the females suck blood but the males do not include: ( CE )
A. flies B. fleas
C. Mosquitoes D. Lice
E. Shirogane
2. Fill in the blanks (1 point for each blank, 20 points in total)
1. The parasites that humans can be used as intermediate hosts and as final hosts are (Tenia solium), (Trichonia spiralis), and (Taenia mansoni).
2. Entamoeba histolytica can only be found in the feces of carriers (cysts), and can only be found in extracts of extraintestinal amoebiasis lesions (trophozoites).
3. The common parasites that may infect raw brook crabs are (Paragonimus westermani) and (Paragonimus stinkii).
4. Artemisinin mainly kills Plasmodium (Plasmodium erythrozoum).
5. The tapeworm larvae that often cause human brain and eye diseases are (cysticercus) and (sparganum); the tapeworm larvae that often cause liver lesions are (echinococcus).
6. Arthropods that can be infected by contact include: (scabies), (demodex), (pubic lice).
7. Among the pathogenic factors affecting E. histolytica, three pathogenic factors have been extensively studied at the molecular level: (lectin), (perforin), and (cysteine protease).
8. There are three genera of mosquitoes that transmit diseases in my country, they are (Culex), (Anopheles) and (Aedes).
3. Explanation of terms (4 points for each sub-question, 20 points in total)
1. Zoonotic parasitic diseases: some parasitic diseases can be naturally transmitted between humans and vertebrates, and this parasitic disease is called zoonotic parasitic diseases.
2. Causes of malaria anemia: Plasmodium directly destroys red blood cells; hypersplenism; immunopathological damage; bone marrow hematopoietic function is inhibited.
3. Holomorphosis: The life history goes through four stages of development: egg, larva, pupa, and adult. The morphological characteristics and living habits of each stage are completely different, which is called complete metamorphosis.
4. transport host: The larvae of some parasites cannot develop into adults after invading an abnormal host, and remain in a larval state for a long time. transfer host.
5. opportunistic parasites: Certain parasites do not usually manifest themselves when they infest healthy humans
Obvious pathogenicity, but when the human immune function is low or defective, abnormal proliferation may occur and the pathogenicity is significantly enhanced, causing acute infection or severe attack in the human body, and even death. Such parasites are called opportunistic parasites.
4. Essay questions (4 questions in total, 40 points)
1. What is the most commonly used etiological examination method for Plasmodium? What factors affect the detection rate of etiological examination method? (10 points)
Answer: The most common etiological examination methods for Plasmodium are thin blood film and thick blood film staining (2 points). The influencing factors are: the production of blood film and the quality of staining (2 points); the quality of the microscope (1 point) ;The examiner's skills and sense of responsibility (2 points); choose the appropriate detection method and blood collection time (2 points); the infection density of protozoa (1 point)
2. What parasites can be infected by eating raw pork? What are their infection periods and disease-causing periods? (12 points)
Answer: infectable parasite period of infection period of pathogenicity
Trichinella spiralis Larval cyst Larval cyst 1.5 points
Paragonimus wescherii Metacercariae, juveniles Juveniles, adults 2.5 points
Taenia solium cysticerci, eggs, adults, cysticerci 2.5 points
Taenia mansoni Protocercariae, Sparganum adult, Sparganum 2.5 points
Toxoplasma trophozoite (pseudocyst), cyst, oocyst, trophozoite cyst 3 points
3. Which category of metamorphic insects does the fly belong to? What are its harms to the human body? (8 points)
Answer: Flies are holometabolous insects (1 point)
Harm of flies to human body:
Direct harm: blood-sucking harassment (1 point), myiasis caused by parasitism (1 point);
Indirect hazards are disease transmission, mechanical transmission, fly transmission of Entamoebic histolytica and other diseases (2 points). Biologically transmitted diseases, fly-transmitted trypanosomiasis (2 points), conjunctival sucking nematode disease (1 point).
4. Patient, female, farmer. In December 1998, she went to the hospital because of a lump the size of a finger was found on her right thigh. Medical history: The habit and medical history of mashing raw frog meat to apply wounds. Physical examination: the skin on the right inner thigh was red and swollen and raised a 2cm×2cm mass with clear edges, medium quality, and mild tenderness. Proposed diagnosis: The cause of the right thigh tumor is to be investigated. Surgery: After local anesthesia, skin incision was made to remove the tumor in vitro. The resected tumor was cut open to find a milky white wriggling worm, 19.8mm long and 2mm wide, flat and chain-like, and able to stretch and move continuously in normal saline. (10 points)
(1) What parasitic disease is the patient most likely to suffer from?
Patient most likely to have sparganosis (2 points)
(2) What is the most likely mode of infection for this patient?
The most likely way of infection in this patient is to apply raw frog meat to the wound, and the sparganosis in the frog meat is infected through the skin (2 points)
(3) What is the principle of prevention and treatment of this disease?
Principles of prevention and treatment: do not eat raw animal meat, such as frogs, snakes, pigs, etc. (2 points); do not apply raw frog meat to wounds, boils, etc. (2 points); do not drink unboiled water (2 points).
Question three
1. Multiple choice questions (only one of the five options A, B, C, D, E is the correct answer, 1 point for each question, 30 points in total)
1. The life cycle of a parasite refers to: (C)
A The reproduction method of the parasite B The feeding source of the parasite
C The process of growth, development and reproduction of the parasite D The species of the parasite host
kind
E The site where the parasite parasitizes the host
2. The source of infection of parasitic diseases should include: (E)
A Patient B Patient and worm host C Carrier and worm host
D patient and carrier E patient, carrier and host
3. The protozoa suitable for direct stool smear staining with iodine solution are: (D)
A Trichomonas vaginalis B Amoeba live trophozoite C Giardia lamblia trophozoite
D Various protozoan cysts E Various live pathogenic protozoa
4. The basic form of the life cycle of Entamoeba histolytica is: (D)
A small trophozoite - cyst - large trophozoite B cyst - large trophozoite - cyst
C large trophozoite - cyst - large trophozoite D cyst - small trophozoite - cyst
E small trophozoite - large trophozoite - cyst
5. Trichomonas vaginalis can parasitize on: (C)
A female vagina B male urethra
C female genitourinary tract, male urogenital tract D female uterus
E male reproductive tract
6. The main symptoms of a typical malaria attack are: (C)
A Sweating, chills, fever B Nausea, vomiting, dizziness
C chills, fever, sweating D sweating, fever, chills
E Fever, tiredness, sweating
7. The period when Plasmodium falciparum can often be detected by blood sampling is: (E)
A Ring body, large trophozoite B Large trophozoite, schizont C Ring body, schizont
D Large trophozoite, gametophyte E Ring body, gametophyte
8. Carriers refer to: (B)
A Patient B A person who is infected with the parasite but does not show clinical symptoms
C non-immune person D susceptible person
None of the above
9. The main basis for visually identifying Ancylostoma americana and Ancylostoma duodenum: (C)
A The size of the worm B The mouth in the mouth pocket C The shape of the body
D Oral sac and umbrella E Location of vulva
10. Ascaris adult parasites in the human body: (A)
A small intestine B cecum C colon D lungs E inferior mesenteric vein
11. The most common comorbidities of ascariasis are: (C)
A Anemia B Appendicitis C Biliary ascariasis (*)
D Intestinal obstruction E Intestinal perforation (Note: ABDE is a complication)
12. The parasitic sites of Malayan filarial are mainly in: (A)
A Superficial lymphatic system of extremities B Superficial lymphatic system and deep lymphatic system of extremities (Bancroftia)
C Lymphatic system of urinary and reproductive system D Lymphatic system of abdominal cavity and spermatic cord
E deep lymphatic system
13. Parasites that use fish as an intermediate host are: (E)
A Schistosoma japonicum B Fasciola brucei C Paragonimus
D Steiner's genus E Clonorchis sinensis (freshwater fish and shrimp)
14. The infection stages of Clonorchis sinensis are: (D)
A filarids B protocercariae C cercariae D metacercariae E miracidia
15. Dioecious parasites are: (C)
A Lung fluke B Clonorchis sinensis C Schistosoma japonicum
D Pork tapeworm E Beef tapeworm
16. The main pathogenic stages of Schistosoma japonicum are: (B)
A adult B egg C miracidium D cercariae E juvenile worm
17. Schistosoma japonicum mainly parasitizes on human body: (C)
A Vesical plexus B Gastric vein C Portal-mesenteric vein
D Splenic vein E Pelvic vein from
18. The stages of Echinococcus granulosus infection in humans are: (A)
A Egg B Echinococcus (pathogenic stage) C Cysticercus D Uncinaricus E Cystocercariae
19. The key to preventing solium infection is: (E)
A manure management B pigsty man toilet
Separation C Meat Inspection
D treat patients E do not eat raw or undercooked pork
20. The infection period of Taenia mansoni to human body is: (E)
A Infection eggs B Adult worms C Protocercariae and eggs
D Sparganus and ova E Protocercaria and Sparganus* Transcutaneous infection
twenty one. After deworming treatment for taeniasis, which of the following is the most suitable to determine the curative effect of fecal examination: (C)
A worm egg B chain body C scorchome (germinal center of *neck) D adult section E gestational section
twenty two. Insects with incomplete metamorphosis are: (D)
A mosquito B fly C flea D lice E sandfly
twenty three. Which type of insect life cycle cannot be separated from the water environment: (D)
A fly B flea C lice D mosquito E sandfly
twenty four. Biological control of arthropods refers to: (C)
A Use insecticides to eliminate arthropods B Use sound, light, electricity, etc. to trap and kill arthropods
C Using natural enemies to prey on arthropods D Using genetic methods to control arthropods
E Controlling arthropods through environmental modification
25. The main pathogenic mechanism of pinworms is: (B)
A. Damage caused by adult worms fixing to the intestinal wall B. Special egg-laying habits of adults
C. Stimulation by parasite metabolites D. Habit of drilling holes
E. Feed the host a large amount of nutrients
26. Human parasites include three categories: (C)
A. Nematodes, trematodes, tapeworms B. Nematodes, protozoa, tapeworms
C. Worms, protozoa, medical arthropods D. Nematodes, protozoa, medical arthropods
E. Worms, flukes, medical arthropods
27. Which worm infection mainly causes anemia: (B)
A. Roundworm B. Hookworm C. Schistosoma japonicum D. Pinworm E. Filarial
28. Soil-borne worms because they: (D)
A．must develop outside
B．Must be infected by mouth
C．There must be an intermediate host in the life history
D．No intermediate host in life history
E. None of the above statements are true
29. The main harm of arthropods to human body is: (E)
A. Harassment B. Poisoning C. Parasitic D. Blood sucking E. Spreading disease
30. The medical arthropods that do not transmit diseases and only parasitize humans are: (E)
A. Hard ticks B. Soft ticks C. Lice D. Fleas E. Scabies mites
2. Fill in the blanks (20 blanks, 1 point for each blank, 20 points in total)
1. The flukes with two testes juxtaposed in the male reproductive system of the adult are (Paragenes wescheri) and (Turina skrenii); those with testes arranged in front and back are (Clonorchis sinensis) and (Flaciola zingiberis); with 7 testes in the form Beaded is (Schistosoma japonicum).
2. The uterine branches of the gestational segment of T. solium are (7-13) per side and (15-30) in T. saginata.
3. The three basic links of the prevalence of parasitic diseases are (infection source), (transmission route) and (susceptible population); the three major factors affecting the prevalence are (natural factors), (social factors) and (biological factors).
4. Eating raw and unwashed aquatic plants may cause infection (Pipella brucei), and contact with infested water will cause infection (Schistosomiasis). *Plant vector for Fasciola brucei
5. There are three genera of mosquitoes that transmit diseases in my country, they are (Culex), (Anopheles) and (Aedes).
6. Parasitic diseases that are often transmitted through sexual contact are (Trichomonas vaginalis) and (Pubic lice).
3. Explanation of terms (4 points for each question, 20 points in total)
1. Intermediate host: A host that a parasite parasitizes in its larval or asexual stages.
2. Resurgence of malaria: After the initial episode of malaria has ceased, if the patient is not reinfected, the
A small number of erythrocytic Plasmodium parasites reproduce in large numbers under certain conditions and cause malaria outbreaks, which is called malaria flare-up.
3. Life history: The entire growth, development and reproduction process of a parasite and its required external environmental conditions.
4. Vector-borne disease: A disease transmitted biologically by vector arthropods or vector insects.
5. Insect-protecting hosts: Human parasites can also parasitize other vertebrates. Some vertebrates are an important source of parasitic disease transmission, and these animals are called insect-protecting hosts.
4. Quiz
1. Give examples to illustrate the harm of medical arthropods to humans (12 points).
Answer: The harm of arthropods to human body includes direct harm and indirect harm. (2 minutes)
Direct harm: blood-sucking harassment, poisoning, parasitic and allergic reactions (4 points);
Indirect damage is the transmission of insect-borne diseases, which is the main damage method of arthropods. According to the characteristics of transmission, it is divided into: mechanically transmitted diseases, such as fly-transmitted Entamoebic dysentery (2 points). Biologically transmitted diseases, divided into developmental type, such as mosquito-borne filariasis (1 point); reproductive type, such as flea-transmitted rodent disease (1 point); developmental type, such as mosquito-transmitted malaria (1 point), via egg transmission , such as Ixodes-transmitted forest encephalitis (1 point).
2. Briefly describe the main similarities and differences of the life histories of four intestinal nematodes, roundworms, hookworms, whipworms and pinworms (10 points).
Answer: Roundworms, hookworms, whipworms, pinworms
Human parasitic parts small intestine small intestine cecum cecum, colon and lower ileum
Larval body migration 2 yes or no
Infection stage Infection stage Filalar eggs Infection stage
Mode of Infection Oral Percutaneous Oral Oral
In addition to the larvae migrating to one column, one point is empty, and the rest are 0.5 points per one.
3. Briefly describe the pathogenic characteristics and diagnostic methods of pig and bovine Taenia saginata. (8 points).
Answer: Humans are the intermediate host of Taenia solium, parasitized by cysticercosis, which mainly causes pig cysticercosis (1 point); clinically, there are three types: 1. Subcutaneous muscle type, 2. Cerebral type, epilepsy, intracranial hypertension, Neuropsychiatric symptoms; 3. Eye type (1 point); diagnostic methods: tissue biopsy (1 point), imaging methods (CT, MRI) and immunological methods for auxiliary diagnosis (1 point);
Humans are the final host, and adults parasitize in the small intestine, causing Taenia solium, and the clinical manifestations are gastrointestinal symptoms (1 point); diagnostic method: stool examination for eggs and gestational nodes (1 point);
Humans can only be the final host of Taenia saginata. Adults parasitize in the small intestine and mainly cause intestinal T. (1 point);
Question four
1. Fill in the blanks:
1. The key to preventing schistosomiasis is to cut off the transmission route of schistosomiasis by eliminating _Snails__.
2. The sources of parasitic infection (source of infection) are _parasitic patients_, __carriers_, __parasitic hosts__.
3. The schistosomiasis eggs in the human body are mainly deposited in the liver and colon. The eggs stimulate the host to develop type IV hypersensitivity inflammation.
4. Tapeworm adults are segmented, and the scorch is the one with attachment.
5. Patients with Taenia solium have __adult stage parasites parasites in the small intestine; patients with porcine cysticercosis have __cysticercus parasites parasites in _subcutaneous muscles, brain and eye area etc.
6. The pathogenic role of Entamoeba histolytica is to cause
Amoebic dysentery disease and parenteral amoebiasis.
7. Plasmodium can cause malaria disease.
8. Pregnant women suffer from toxoplasmosis, and toxoplasma can be transmitted to the fetus through the placenta to cause infection.
9. Parasites that are superinfected by themselves include Taenia solium and pinworms.
10. Humans are the definitive and intermediate hosts of Taenia solium and Trichinella mansoni
11. Mosquitoes can transmit malaria, Japanese encephalitis, filarial worms, and pathogenic problems.
3. Multiple choice questions: (1 point for each question, 60 points in total)
1. A class of lower animals that permanently or temporarily parasitize in or on the body of another organism to obtain nutrition and cause damage to it is called: (B)
A opportunistic parasite B parasite C endoparasite D facultative parasite
2. The stages of hookworm infection are: (B)
Ainfectious eggs Bfilariae Cmicrofilariae Drod-shaped larvae Eeggs
3. The characteristics of the oral cavity of Ancylostoma duodenale are: (A)
A has two pairs of hook teeth on the ventral surface B has a pair of hook teeth on the ventral surface C has two pairs of hook teeth on the back side D has a pair of hook teeth on the back side E has three pairs of hook teeth on the ventral surface
4. The stages of filarial infection are: (B)
A eggs B filariae C adults D microfilariae E sausage larvae
5. The night-time periodicity is: (E)
A roundworm larva B hookworm filariae C filariae adult filariae D filariae filariae E filariae microfilariae
6. The parasitic sites of adult filarial worms in the human body are: (C)
A digestive system B respiratory system C lymphatic system D urinary system E circulatory system
7. Commonly used methods for checking pinworm eggs are: (D)
A direct smear method of feces B saturated saline flotation method C precipitation method D transparent tape method E thick blood film method
8. The morphological characteristics of whipworm eggs are: (C)
A oval, containing 4-8 egg cells B pulmonary nuclei, containing a larva C drum-shaped, with transparent plugs at both ends, containing an egg D oblong, containing refractive granules E wide oval, inside contains an egg cell
9. Which infection method is the main cause of human infection with Trichinella spiralis? (D)
A swallow eggs B larvae burrow into the skin C inhale eggs D swallow meat containing larval cysts E flea bites
10. Parasites that lay eggs in the skin around the anus of a person are: (A)
A pinworm B roundworm C hookworm D whipworm E silkworm
11. Which is the causative agent of kala-azar? (C)
A．Cryptosporidium b. Giardia lamblia C. Leishmania donovani D. Plasmodium E. Toxoplasma gondii
12. To diagnose Plasmodium infection, which specimen should be collected for the pathogen? (E)
A．feces b. urine c. cerebrospinal fluid d. blood E．marrow
13. Which parasite lives inside red blood cells? (D)
A．Entamoeba histolytica B. Trichomonas vaginalis C. Toxoplasma gondii D. Plasmodium E. Cryptosporidium
14. The indirect harm of medical arthropods to human body is (A)
A．Spread pathogens b. blood sucking c. Poison D．HarassmentE．parasitic
15. Which parasitic infections can a urine test assist in diagnosing? (C)
A．Entamoeba histolytica B. Plasmodium c. Trichomonas vaginalis D. Cryptosporidium
16. Which pathogens can Chinese sandflies transmit? (A)
A．Leishmania donovani B. Plasmodium c. Cryptosporidium d. Toxoplasma gondii E. Trichomonas vaginalis
17. The remnant malaria parasites in red blood cells reproduce in large numbers due to antigenic variation and decline of immune function of the body, and the process of causing malaria outbreak again is called: (C)
A．malaria
seizure b. relapse c. Reflame D．Dangerous malaria
18. The main pathogenic period of Toxoplasma gondii is (B)
A．Tachyzoites B. Cyst C．oocyst d. False cyst E. gametophyte
19. Which method is currently used in China to diagnose Toxoplasma gondii infection? (B)
A. Immunodiagnostic detection of Toxoplasma antigen B. Serological examination of Toxoplasma antibody C. Direct smear method for detection of Toxoplasma gondii D. Biopsy of tachyzoites E. Toxoplasma isolation method
20. The pathogenic stages of amoeba histolytica are (C)
A．Cyst B．Small trophozoite C. Large trophozoite D. Gametophytes E. Worm eggs
twenty one. What is the interval between vivax malaria attacks? (D)
A．8 hours b. 12 hours c. 24 hours D．48 hours e. 72 hours
twenty two. Malaria is caused by Plasmodium parasites in (A)
A．Proliferation of erythrocyte endometriosis b. Caused by extraerythrocytic cleavage C. Caused by gametophyte formation D. Delayed sporozoites cause
twenty three. Which arthropod develops in holometamorphosis (D)
A．lice b. tick c. mites d. fly E．bed bugs
K-type questions
53．Diagnosis of filarial infection should take _(_D_) specimens to check for microfilariae?
A feces B urine C lymph D blood
54．The morphological characteristics of roundworm fertilized eggs are: (ABC)
A Wide oval, brownish yellow B Thick shell covered with a layer of uneven protein film
C egg contains a large and round egg cell D has egg cover and shoulder
55．Trichinella is characterized by: (ABCD)
AAfter the mating of the female and the male, the female produces larvae B. The cyst is the stage of infection C. Infects the human body through the mouth D. Biopsy is often used for diagnosis
56．Stool examination for eggs can help diagnose: ( ABCD)
A taeniasis B hookworm C schistosomiasis D pinworm
57．Filarial can cause human body: (ABCD)
A lymphangitis B lymphadenitis C elephantiasis D chyluria
58．Intestinal parasitic nematodes are (ABC)
A Roundworm B Hookworm C Pinworm D Filarworm
59．Which of the following human parasites has an infective stage called metacercariae? (AC)
A lung fluke B Entamoeba histolytica C ginger worm D Toxoplasma gondii
60．Factors contributing to the prevalence of ascariasis include: (ABCD)
A roundworms lay large number of eggs B improper management of feces C eggs with strong resistance D simple life cycle