Question

Question 13 (2 points) Which of the following is NOT a true statement? When Schistosoma eggs are circulated in the blood, they can lodge in distant organs Schistosoma adults lay their eggs into the intestine, where they are shed in feces Schistosoma flukes inhabit the intestinal blood vessels for part of their life cycle Human Schistosoma infections are transmitted by direct person-to-person contact without an intermediate host Granulomas form around Schistosoma eggs and can damage internal organs (liver, lungs, etc.)

Answer 1

Option 4 is not a true statement.

1,2,3,5 are correct because option 1.schistosoma eggs can lodge in the blood vessels of the intestine causing inflammation, and, consequently, diarrhoea and Chest pain is the result of larval parasites moving though the lung tissue and later it becoming trapped in the blood vessels that supply the lungs.

Option 2. When the schistosoma parasite finds a host in the water, it burrows into their skin and within  several weeks the parasite matures and the females produce eggs.Some of these eggs can then migrate to the intestine  where they are passed into the urine or faeces and excreted.

Option 3. Schistosoma mansoni is a water-borne parasite of humans, and belongs to the group of blood flukes . The adult lives in the blood vessels near the human intestine. It causes intestinal schistosomiasis.

Option 4. A person with schistosomiasis cannot pass it on to another person.  Humans only become infected through contaminated water where the snails are living.

Option 5. Yes granulomatous inflammatory response induced by schistosome eggs entrapped in the microvasculature of host tissues is considered responsible for much of the symptomatology of schistosomiasis.

Thats why option 4 is incorrect.

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