Major regions of the large intestine include the
A)cecum, ileum, and duodenum.
B)duodenum, ileum, and jejunum.
C)cecum, colon, and duodenum.
D)ascending colon, descending colon, and ileum.
E)cecum, colon, and rectum.
An expanded pouch in the region of the ileum at the ileocecal valve is the
Functions of the large intestine include
A)chemical digestion of chyme.
B)temporary food storage.
C)reabsorption of water and compaction of feces.
D)absorption of the products of digestion.
E)production of digestive enzymes.
During the defecation reflex, the
A)stretch receptors in the rectal walls stimulate parasympathetic motor neurons.
B)internal and external anal sphincters relax simultaneously.
C)abdominal wall relaxes and the internal abdominal pressure decreases.
D)gastroileal reflex moves materials into the rectum through mass peristalsis.
E)decreased peristaltic contractions occur in the sigmoid colon and rectum.