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Flashcards in GI Physiology Deck (29):
0

Layers of the GI tract

Mucosa; submucosa, muscularis, serosa

1

The liver can regenerate up to how much?

70%

2

Where are ito cells found

Space of disse

3

Where are kuppfer cells found

Liver sinusoids

4

Cells in the liver that store vit A

Ito cells

5

APC cells in the liver

Kuppfer cells

6

Source of gastrin

G cells

7

Source of secretin

S cells

8

Source of cholecysokinin

I cells

9

Source of glucose dependent insulinotrophic pepide

K cells

10

Source of motilin

M cells

11

Increases gastric H secretion, stimulates growth of gastric mucosa

Gastrin

12

Increases pancreatic bicarbonate, increases biliary bicarbonate; decreases effect of gastrin

Secretin

13

Stimulates GB contraction, sphincter of oddi relaxation; inhibits gastric emptying

CCK

14

Increases insulin secretion, inhibits gastric emptying

Glucose dependent insulontrophic enzyme

15

Removed remnant food in GI tract

Motilin

16

Most potent stimuli for gastrin production

Tryptophan, phenylalanine, methionine

17

Candidate GI hormone that inhibits pancreatic HCO3 and enzymes

Pancreatic polypeptide

18

GLP 1 is secreted by?

L cells

19

Candidiate GI hormone that stimulates insulin production

GLP 1

20

Inhibits release of all GI hormones

Somatostatin

21

Increases H secretion; potentiates gastrin and Ach action

Histamine

22

NT that increases salivary secretion

NE

23

Contractions due to subthreshold slow waves

Tonic contractions

24

Contractions due to spike potentials

Phasic contractions

25

GI pacemaker

Intersititial cells of cajal

26

Spike potential's depolarization is due to

Calcium

27

Receptive relaxation of the orad stomach is due to

Vagovagal reflex mediated by VIP

28

Responsible for migrating myoelectric complex

Motilin