Gastric motility and Pancreatic function Flashcards Preview

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

What generates gastric peristaltic waves?

A

Pacemaker cells

2
Q

What do slow waves produce?

A

Spontaneous depolarisation/ repolarisation

3
Q

What determines the strength of contraction?

A

Number of action potentials

4
Q

What effect does gastrin have on contraction?

A

Increases contraction

5
Q

What type of glands secrete bicarbonate

A

Brunner’s glands

6
Q

What will acid in the duodenum trigger?

A

HCO3 secretion

Release of secretin from S cells cause HCO3 secretions

7
Q

What are the 3 parts of the pancreas?

A

Head
Body
Tail

8
Q

What are the Islets of Langerhans?

A

Cells that produce insulin, glucagon and somatostatin

9
Q

What does somatostatin control?

A

Secretion of insulin and glucagon

10
Q

What are the functions of the exocrine pancreas?

A

Secretion of bicarbonate by duct cells

Secretion of digestive enzymes by acing cells

11
Q

What are zymogens?

A

Inactive enzymes which prevent autodigetion of pancreas

12
Q

What stimulates bicarbonate secretions?

A

Secretin

13
Q

When is secretin released

A

Response to acid in the duodenum

14
Q

What stimulates zymogen secretion?

A

Cholecystokinin

15
Q

When is CKK released?

A

In response to fat/amino acids in duodenum