Question

In which organ of man is Entamoeba histolytica found?

• A. Rectum
• B. Oral cavity
• C. Stomach
• D. Intestine

Answer 1

Answer: (D)

The cysts of E. histolytica enter the small intestine and release active amoebic parasites (trophozoites), which invade the epithelial cells of the large intestines, causing flask-shaped ulcers. Infection can then spread from the intestines to other organs - eg, the liver, lungs and brain, via the venous system. Amoebiasis is caused by the protozoan Entamoeba histolytica.

Therefore, the correct answer is option D.