Question

which of the following is not a region of the small intestine?
a jejunum
b ileum
c cecum
d duodenum

Explanation:

The small intestine has three main regions: duodenum, jejunum, and ileum. The cecum is part of the large intestine, specifically the beginning of the large intestine. So among the options, cecum is not a region of the small intestine.

Answer:

C. Cecum