GI: Gastric Motility

Question 1

What are the cells in the pyloric gland area?

Answer 1

D cells

G celss

Question 2

What are the cells in the oxytic mucosa?

Answer 2

Chief
Enterochromaffin
Parietal

Question 3

What do D cells secrete?

Answer 3

somatostatin

Question 4

What do G cells secrete?

Answer 4

gastrin

Question 5

What do chief cells secretes?

Answer 5

pepsinogen

Question 6

What do enterocromaffin like cells secrete?

Answer 6

histamine

Question 7

What do parietal cells secrete?

Answer 7

intrinsic factor

HCl

Question 8

What does HCl do?

Answer 8

Activates pesinogen to pepsin
Denature proten
Kills bacteria

Question 9

What does intrinsic factor do?

Answer 9

Binds vitamen B12 so that it can be absorbed in the intestine

Question 10

What does histamine doe?

Answer 10

Stimulates HCl secretion

Question 11

What does gastrin do?

Answer 11

Stimulates secretion of HCL

Question 12

What does somatostatin do?

Answer 12

Inhibits secretion of Hcl

Question 13

Where is HCl secreted into?

Answer 13

Canaliculus

Question 14

What increases the activity f the proton pump?

Answer 14

Gastrin
Histamine
Parasympathetic activity

Question 15

What muscarinic receptors work on parietal cells?

Answer 15

M3

Question 16

What happens to the cannaliculur membrane when the parietal cell is in the activated state?

Answer 16

Becomes microvillus

Question 17

What are the three phases of gastric secretion?

Answer 17

Cephalic
Gastric
Intestinal

Question 18

What drives the secretion of somatostatin?

Answer 18

Low stomach lumen pH as occurs between meals