Digestive System.4

Question 1

What are the functions of the stomach?

Answer 1

collect/ hold food
mechanical breakdown- rhythmic churning
start chemical/ enzymatic breakdown
protein digestion

Question 2

What are some structural features of the stomach?

Answer 2

c-shaped sac
left cranial abdomen

Question 3

Cardiac sphincter-

Answer 3

enters food, from oesophagus

Question 4

Pyloric sphincter-

Answer 4

gains food from oesophagus- into duodenum of SI

Question 5

Inner curve of stomach-

Answer 5

lesser curvature

Question 6

Outer curve of stomach-

Answer 6

greater curvature

Question 7

What artery does the stomach receive blood supply from?

Answer 7

coeliac artery- branch from aorta to portal vein

Question 8

Peritoneal around the stomach-

Answer 8

omentum

Question 9

Peritoneal around the intestines-

Answer 9

mesentery

Question 10

What are the 3 stomach regions?

Answer 10

cardia
fundus
pylorus

Question 11

What are the stomach walls lined with?

Answer 11

gastric mucosa- rugae/ large folds- flatten when stomach fills

Question 12

What are the 3 cells within the gastric pits?

Answer 12

goblet- all
chief- body
parietal- body

Question 13

Goblet Cells-

Answer 13

mucous lubricates food- protects stomach wall from digestive enzymes

Question 14

Chief Cells-

Answer 14

secretes pepsinogen- inactivated pepsin- breaks down to peptides

Question 15

Parietal Cells-

Answer 15

secretes hydrochloric acid- creates pH activates pepsin

Question 16

What does the distention of the stomach stimulate?

Answer 16

gastrin release from gastric wall- stimulates secretion of gastric juices

Question 17

Chyme-

Answer 17

stomach fluid

Question 18

Chyle-

Answer 18

lymphatic fluid

Question 19

What are the layers of the stomach?

Answer 19

serosa
smooth muscle- longitudinal, circular, oblique
submucosa
mucosa