G.I.

Question 1

What is the Cephalic phase?

Answer 1

Receptors for sight, smell, taste, and even the thought of food initiate reflexes that cause salivation, production of gastric juice and gastric contractions. Responses mediated by the vagus nerve and prepares system for arrival of meal

Question 2

What is the Gastric phase?

Answer 2

: the meal in the stomach and distention of stomach initiate reflexes that cause gastric secretions and increase gastric motility.

Question 3

What happens in Intestinal phase?

Answer 3

intestinal contents and distension initiate reflexes that cause secretion of bicarbonate, digestive enzymes, and bile and begin segmenting contractions in the small intestine. Inhibitory reflexes from intestine slow gastric emptying while intestinal contents are neutralized, digested and absorbed

Question 4

What is the intrinsic control of the enteric nervous system?

Answer 4

Myenteric (Auerbach’s) plexus Submucosal (Meissner’s) plexus.