GI 4

Question 1

The Cephalic phase is initiated

Answer 1

In the brain (Long reflex)

Question 2

Stimuli for acid secretion

Answer 2

Apical H+/K+ ATPase, CL- and K+ transporters stored in vesicles
Gastrin, Histamine, ACh, Somatostain causę exocytosis and insertion of apical transporters

Question 3

What kind of a reflex is Gastric Acid secretion

Answer 3

Long Reflex

Question 4

D cells

Answer 4

Inhibit parietal cells

Question 5

Gastric digestive enzyme secretion

Answer 5

Stimulated by acid secretion via short reflex
Stimulates chief cells

Question 6

ECL

Answer 6

Histamine activates H2 receptors on parietal cells to stimulate Hcl secretion

Question 7

Parietal cell

Answer 7

Intrinsic factor
Forms a complex with Vit B12 so it can be absorbed

Question 8

D cell

Answer 8

Somatostatin
Break for Acid secretion

Question 9

What are mucus and HCO3- Secreted from

Answer 9

Mucous cells

Question 10

Mucus layer is a ________

Answer 10

Physical barrier

Question 11

Peptic Ulcer

Answer 11

A sore or break in the lining of the stomach or duodenum

Question 12

Reason of peptic ulcer

Answer 12

Excessive Acid Production
- Gastrin
- Secreting tumors
Anti inflammatory Drugs

Question 13

H Pylori

Answer 13

Bacteria caused peptic ulcers
Major reason of peptic ulcer

Question 14

Gastic absorbtion?

Answer 14

Not a lot

Question 15

In intestinal phase what combination go contractions occur

Answer 15

Segmental and peristaltic contractions

Question 16

What increase surface area in Intestine

Answer 16

Pilcae and Villi

Question 17

Villi

Answer 17

Increase surface area available for absorption and secrete mucus

Question 18

Crypts

Answer 18

Contain hormone and fluid secretory cells + stem cells

Question 19

Where do fats enter from in intestine

Answer 19

Lacetals

Question 20

Hepatic portal system

Answer 20

Liver acts as a biological filter

Question 21

Gastric acid is released from

Answer 21

Parietal cells