PARASITOLOGY MIDTERM EXAM
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Questions and Answers

What is the primary habitat of Fasciola hepatica?

  • Fish's gills
  • Intestine of the definitive host
  • Snail's digestive system
  • Biliary ducts of the liver (correct)

Which of the following is an intermediate host for Clonorchis sinensis?

  • Snail
  • Ant
  • Crab
  • Fish (correct)

How do adult Fasciola hepatica attach themselves to the host's internal organs?

  • Using their hooks and suckers (correct)
  • Through skin penetration
  • By ingestion of contaminated food
  • Using their ventral and genital suckers

What is the characteristic of Fasciola gigantica eggs?

<p>Operculated, embryonated (C)</p> Signup and view all the answers

How many intermediate hosts are required for the life cycle of Schistosomes?

<p>1 (D)</p> Signup and view all the answers

What is the common name for Fasciola hepatica?

<p>Sheep Liver Fluke (A)</p> Signup and view all the answers

Which liver fluke has a deeply lobulated shape?

<p>Opistorchis viverrini (A)</p> Signup and view all the answers

What is the primary mode of transmission for Opistorchis felineus?

<p>Ingestion of infected fish (A)</p> Signup and view all the answers

Which host is responsible for the transmission of Dicrocoelium dendriticum?

<p>Ant (A)</p> Signup and view all the answers

What is the characteristic of the egg of Opistorchis felineus?

<p>Operculated and mature (A)</p> Signup and view all the answers

Which intestinal fluke is known to infect humans and is the largest fluke to do so?

<p>Fasciolopsis buski (B)</p> Signup and view all the answers

What is the characteristic of the Echinostomids?

<p>Horseshoe-shaped collar of spines (A)</p> Signup and view all the answers

What is the primary habitat of Echinostoma ilocanum?

<p>Small Intestine (B)</p> Signup and view all the answers

What is the most common manifestation of Heterophyes infection?

<p>Peptic ulcer disease (C)</p> Signup and view all the answers

Which of the following is a characteristic of Heterophyes heterophyes eggs?

<p>Operculated and mature (A)</p> Signup and view all the answers

What is the reservoir host for Echinostoma ilocanum?

<p>Rat (C)</p> Signup and view all the answers

What is the mode of transmission for Metagonimus yokogawai?

<p>Ingestion of 2nd intermediate host (C)</p> Signup and view all the answers

What is the shape of Heterophyes heterophyes?

<p>Teardrop-shaped (D)</p> Signup and view all the answers

What is the common name of the parasite Fasciola gigantica?

<p>Tropical Liver Fluke (C)</p> Signup and view all the answers

What is the habitat of the parasite Clonorchis sinensis?

<p>Bile duct and gallbladder (C)</p> Signup and view all the answers

What is the intermediate host of the parasite Fasciola hepatica?

<p>Snail and kangkong (A)</p> Signup and view all the answers

What is the characteristic of the egg of Fasciola gigantica?

<p>Unembryonated and yellowish brown (B)</p> Signup and view all the answers

What is the effect of Clonorchis sinensis on the host?

<p>All of the above (D)</p> Signup and view all the answers

What is the mode of transmission of Fasciola gigantica?

<p>Ingestion of metacercaria from plants (B)</p> Signup and view all the answers

What is the characteristic shared by all trematodes except for Schistosomes?

<p>They are hermaphroditic (D)</p> Signup and view all the answers

Which stage of the trematode life cycle is infective to the definitive host?

<p>Cercaria (A)</p> Signup and view all the answers

What is the function of the sensory organs in the miracidium stage?

<p>To locate and penetrate the snail host (B)</p> Signup and view all the answers

Which stage of the trematode life cycle is responsible for asexual reproduction?

<p>Sporocyst (B)</p> Signup and view all the answers

What is the characteristic of the eggs of all trematodes except for Schistosomes?

<p>They are operculated (B)</p> Signup and view all the answers

Which stage of the trematode life cycle is dormant and infective to the definitive host?

<p>Metacercaria (A)</p> Signup and view all the answers

What is the first intermediate host in the trematode life cycle?

<p>Snails (A)</p> Signup and view all the answers

What is the characteristic of the rediae stage?

<p>It is a motile larva with a mouth and digestive system (D)</p> Signup and view all the answers

Which stage of the trematode life cycle is short-lived and uses cilia to swim?

<p>Miracidium (B)</p> Signup and view all the answers

What is the starting point of the trematode life cycle?

<p>Egg (B)</p> Signup and view all the answers

What is the habitat of Paragonimus westermani?

<p>Lungs (D)</p> Signup and view all the answers

What is the infective stage of Paragonimus westermani?

<p>Metacercaria (A)</p> Signup and view all the answers

What is the characteristic of the egg of Paragonimus westermani?

<p>Operculated, immature/unembryonated (A)</p> Signup and view all the answers

What is the second intermediate host of Paragonimus westermani?

<p>Crabs, crayfish, lobster (A)</p> Signup and view all the answers

What is the diagnosis of Paragonimus westermani based on?

<p>Sputum and stool examination for eggs (C)</p> Signup and view all the answers

What is the name of the pancreatic fluke?

<p>Eurytrema pancreaticum (B)</p> Signup and view all the answers

What is the common name of the parasite that causes Oriental Schistosomiasis or Katayama's Disease?

<p>Oriental Blood Fluke (A)</p> Signup and view all the answers

Which species of Schistosoma is responsible for Urinary Bilharziasis?

<p>Schistosoma haematobium (D)</p> Signup and view all the answers

What is the habitat of Schistosoma mansoni?

<p>Inferior Mesenteric Vein of the Colon and the Rectum (A)</p> Signup and view all the answers

What is the characteristic shape of Schistosoma japonicum eggs?

<p>With a small knob-like or small lateral spine (B)</p> Signup and view all the answers

What is the mode of transmission for all species of Schistosoma?

<p>Skin Penetration (A)</p> Signup and view all the answers

What is the chronic infection outcome of Schistosoma japonicum?

<p>Hepatic and Pulmonary Cirrhosis (B)</p> Signup and view all the answers

What is the intermediate host for Schistosoma mansoni?

<p>Snail (Biomphalaria spp.) (B)</p> Signup and view all the answers

What is the characteristic of Schistosoma haematobium eggs?

<p>Unoperculated embryonated (mature) with a prominent terminal spine (A)</p> Signup and view all the answers

What is the diagnostic method for Schistosoma haematobium?

<p>Urine Sample Examination (A)</p> Signup and view all the answers

What is the pathogenesis of chronic Schistosoma haematobium infection?

<p>Bladder Carcinoma, Obstructive Uropathies (D)</p> Signup and view all the answers

What is the shape of the female Schistosome?

<p>Circular in section (B)</p> Signup and view all the answers

What is the infective stage of Schistosomes?

<p>Cercaria (D)</p> Signup and view all the answers

How do Schistosomes penetrate the host?

<p>Through skin penetration (A)</p> Signup and view all the answers

What is the laboratory diagnosis for Schistosomiasis?

<p>Stool exam and urine analysis (B)</p> Signup and view all the answers

What is the confirmatory test for Schistosomiasis?

<p>Circumoval Precipitin Test (B)</p> Signup and view all the answers

What is the treatment for Schistosomiasis?

<p>Praziquantel (D)</p> Signup and view all the answers

What is the mode of transmission for S. haematobium?

<p>Skin penetration (D)</p> Signup and view all the answers

What is the characteristic of Schistosomule?

<p>Cercaria minus tail (C)</p> Signup and view all the answers

What is the antigen detection method for Schistosomiasis?

<p>Circulating Cathodic Antigen (urine) (A)</p> Signup and view all the answers

What is the characteristic of the adult tapeworm?

<p>Segmented and ribbon-like (D)</p> Signup and view all the answers

How do tapeworms absorb nutrients and eliminate waste?

<p>Through the integument (body surface) (D)</p> Signup and view all the answers

What is the function of the scolex in a tapeworm?

<p>To attach to the lining of the small intestine (C)</p> Signup and view all the answers

What is the first stage in the life cycle of a tapeworm?

<p>Egg (A)</p> Signup and view all the answers

What is the role of the oncosphere?

<p>To burrow through the wall of the intermediate host (C)</p> Signup and view all the answers

What is the region of growth in a tapeworm?

<p>Neck (C)</p> Signup and view all the answers

How does the tapeworm obtain nutrients?

<p>Through the integument (body surface) (C)</p> Signup and view all the answers

What is the function of the uterine pore?

<p>Where egg exits (B)</p> Signup and view all the answers

What is the characteristic of the order Pseudophyllidean?

<p>False Tapeworm (C)</p> Signup and view all the answers

What is the total life span of some tapeworms?

<p>Up to 25 years (D)</p> Signup and view all the answers

What is the name of the species which may or may not require an intermediate host?

<p>H.nana (B)</p> Signup and view all the answers

What is the site where the male and female reproductive organs meet?

<p>Genital pore (D)</p> Signup and view all the answers

What is the term for the process where a proglottid is detached from the tapeworm?

<p>Apolysis (A)</p> Signup and view all the answers

What is the term for the segments of the tapeworm body?

<p>Proglottids (B)</p> Signup and view all the answers

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