Gastric motility and Pancreatic function Flashcards Preview

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Flashcards in Gastric motility and Pancreatic function Deck (15):
1

What generates gastric peristaltic waves?

Pacemaker cells

2

What do slow waves produce?

Spontaneous depolarisation/ repolarisation

3

What determines the strength of contraction?

Number of action potentials

4

What effect does gastrin have on contraction?

Increases contraction

5

What type of glands secrete bicarbonate

Brunner's glands

6

What will acid in the duodenum trigger?

HCO3 secretion
Release of secretin from S cells cause HCO3 secretions

7

What are the 3 parts of the pancreas?

Head
Body
Tail

8

What are the Islets of Langerhans?

Cells that produce insulin, glucagon and somatostatin

9

What does somatostatin control?

Secretion of insulin and glucagon

10

What are the functions of the exocrine pancreas?

Secretion of bicarbonate by duct cells
Secretion of digestive enzymes by acing cells

11

What are zymogens?

Inactive enzymes which prevent autodigetion of pancreas

12

What stimulates bicarbonate secretions?

Secretin

13

When is secretin released

Response to acid in the duodenum

14

What stimulates zymogen secretion?

Cholecystokinin

15

When is CKK released?

In response to fat/amino acids in duodenum