Physiology: gastric motility and secretion 3

Question 1

what are the different classes of stomach mucosa in terms of secretion

Answer 1

oxyntic gland area, pyloric gland area

Question 2

what is part of the oxyntic gland area

Answer 2

proximal stomach, including fundus + body

Question 3

what is part of the pyloric gland area

Answer 3

distal stomach, the antrum

Question 4

what is gastric mucosa composed of (3)

Answer 4

surface lining of the stomach, pits and glands(at base of pits)

Question 5

what is secreted by the oxyntic mucosa (5)

Answer 5

HCl, pepsinogen, gastroferrin, histamine, mucus

Question 6

what is secreted by the pyloric mucosa (3)

Answer 6

gastrin, somastatin, mucus

Question 7

what are the 3 phases of gastric acid secretion

Answer 7

cephalic phase, gastric phase and intestinal phase

Question 8

when does the cephalic, intestinal and gastric phase of gastric acid secretion take place

Answer 8

cephalic = before food reaches the stomach
gastric = when food is in the stomach
intestinal = after food has left the stomach

Question 9

what type of cells secrete gastric acid

Answer 9

parietal cells