The urinary form resides in the blood vessels of which organ?

The urinary form resides in the blood vessels of which organ?

• A. Bladder
• B. Liver
• C. Intestine
• D. Brain

Answer: (A)

The urinary form refers to the adult schistosome that causes urinary schistosomiasis, and it resides in the venous network surrounding the urinary bladder. These worms pair up in the vesical (bladder) venous plexuses, and their eggs are then shed in the urine, which is why urine can contain eggs and why bladder pathology and hematuria are common features. This contrasts with other Schistosoma species, whose adults inhabit different venous sites—mesenteric veins near the intestines for intestinal forms, and other organs are not typical reservoirs for the urinary form.

The urinary form refers to the adult schistosome that causes urinary schistosomiasis, and it resides in the venous network surrounding the urinary bladder. These worms pair up in the vesical (bladder) venous plexuses, and their eggs are then shed in the urine, which is why urine can contain eggs and why bladder pathology and hematuria are common features. This contrasts with other Schistosoma species, whose adults inhabit different venous sites—mesenteric veins near the intestines for intestinal forms, and other organs are not typical reservoirs for the urinary form.