GI 6

Question 1

Activation of most pancreatic zymogen depends on

Answer 1

Trypsin

Question 2

Sources of regulation in the intestinal phase

Answer 2

Acidity
Fat
Amino acids
Hypertonicity
Distension

Question 3

When substances move into intestine what happens in the stomach

Answer 3

Reduced motility and secretions in the stomach

Question 4

What is intestinal motility influenced by

Answer 4

ENS neurons (Myenteric plexus)

Question 5

Segmental contraction

Answer 5

mixing food

Question 6

Peristaltic Contractions

Answer 6

Responsible for forward motion

Question 7

Mo cells

Answer 7

Secrete motion
Possibly stimulated by alkaline pH

Question 8

Accessory secretion are _________

Answer 8

Long reflexes

Question 9

Types of GI peptides

Answer 9

S cells, I cells, K cells, L cells

Question 10

S cells

Answer 10

Secretin

Question 11

I cells

Answer 11

CKK

Question 12

K cells

Answer 12

Glucose dependent insulinotropic peptide (GIP)

Question 13

l CELLS

Answer 13

Glucagon like peptide 1 (GLP-1)

Question 14

When do pancreatic secretions start

Answer 14

Cephalic phase and Gastric phase

Question 15

what are associated with pancreatic secretions

Answer 15

Gastrin and parasympathetic neurons

Question 16

enteropancreatic reflex

Answer 16

1. Small intestine influencing the pancreas

Question 17

S cells

Answer 17

Secretin secreted from S cells
Stimulated by acid coming in from duodenum

Question 18

Role of S cells

Answer 18

Stimulates bicarbonate secretion from pancreas
(Lots of bicarbonate to regulate acid in the stomach)

Question 19

Secondary mechanism of S cells

Answer 19

Stimulated bile secretion from liver
Inhibit of the Gastric acid secretion and gastric motility

Question 20

Carbohydrates are primarily absorbed by

Answer 20

Monosaccharides

Question 21

I cells

Answer 21

Cholecystokinin (CKK)
Stimulated by the presence of fatty acids and amino acids in chyme

Question 22

Primary role of I cells

Answer 22

Regulates pancreatic enzyme secretion

Question 23

Secondary role of I cells

Answer 23

Regulates bile secretion

Question 24

K cells and L cells

Answer 24

Gastro inhibitory peptides
Glucagon like peptide
Glucose homeostais
Promotes production of insulin
Insulin is secreted in the pancreas
Inhibit gastric acid secretion and motility

Question 25

Major role of Large intestine

Answer 25

Store and concentrate fecal matter

Question 26

Gastroileal reflex

Answer 26

Relaxation of ileum
Food in stomach

Question 27

Appendix

Answer 27

store gut bacteria

Question 28

Large intestine lacks _____

Answer 28

Villi

Question 29

Secretions in large intestine

Answer 29

Minimal

Question 30

Digestion in large intestine

Answer 30

Zero digestion
But bacteria is digested in the large intestine

Question 31

Motility in large intestine

Answer 31

Very slow
Slow segmental contractions
Haustral rolling of churning
mass peristalsis (me)