Question

food leaving the small intestine first enters the ______ of the colon.
a cecum
b sigmoid colon
c appendix
d ascending colon

Explanation:

The cecum is the first part of the colon. It is connected to the ileum (the last part of the small intestine) via the ileocecal valve. The sigmoid colon is the last part of the colon before the rectum. The appendix is a small pouch attached to the cecum. The ascending colon is the part of the colon that goes up from the cecum. So food leaving the small intestine first enters the cecum.

Answer:

A. cecum