Gastric motility and secretion

Question 1

peristaltic waves are produced by

Answer 1

peristaltic rhythm generated by pacemaker cells in the longitudinal muscle layer

Question 2

motility is under ……./……. control

Answer 2

neural / hormonal

Question 3

gastrin does what to contraction?

Answer 3

increases contraction

Question 4

fat/acid/amino acid/ hypertonicity in the duodenum allows for the inhibitions of

Answer 4

motility

Question 5

acid is neutralised in the duodenum by

Answer 5

bicarbonate

Question 6

bicarbonate is secreted by

Answer 6

Brunner’s gland ducts cells (submucosal glands)

Question 7

acid in the duodenum triggers 2 things:

Answer 7

long and short reflexes that stimulate bicarbonate secretion

release of secretin that simulate bicarbonate secretion

Question 8

secretin stimulates the release of……. from the ………

Answer 8

bicarbonate

pancreas and liver and duodenum and bile duct

Question 9

acid neutralisation inhibits ….. release

Answer 9

secretin

Question 10

exocrine pancreas secretes bicarbonate from

Answer 10

duct cells

Question 11

exocrine pancreas secretes digestive enzymes from

Answer 11

acinar cells

Question 12

acinar cells secrete

Answer 12

enzymes

Question 13

acinar cells contain digestive enzymes stored as inactive

Answer 13

Zymogens granules

Question 14

Zymogens prevent the…….. of the pancreas

Answer 14

auto digestion

Question 15

Cholecystokinin (CCK)

Answer 15

Its presence causes the release of digestive enzymes and bile from the pancreas and gallbladder

Question 16

CCK is released in response to

Answer 16

fat/AAs in the duodenum

Question 17

pancreas is under …. control

Answer 17

neural

Question 18

zymogen secretion is stimulated by

Answer 18

CCK

Question 19

zymogen

Answer 19

inactive enzyme

must be activated by another enzyme

Question 20

bicarbonate secretion is stimulated by

Answer 20

secretin

Question 21

secretin is released in response to

Answer 21

acid in the duodenum