S1- Purpose

Question 1

What is the name of food that is leaving the stomach?

Answer 1

Chyme

Question 2

What are the layers of the stomach? (Out to in)

Answer 2

Longitudinal layer (Outer)
Circular layer (middle)
Oblique layer (inner)

Question 3

Describe the actions of the upper and lower areas of the stomach

Answer 3

Upper area- creates basal tone

Lower- powerful peristaltic contractions- grind the food (note thicker muscle layer distally)

Question 4

What are the folds in the stomach called?

Answer 4

Rugae

Question 5

What prevents the intra luminal pressure of the stomach from rocketing when eating?

Answer 5

Receptive relaxation

Question 6

What are the 4 defences of the GI tract?

Answer 6

Saliva
HCl
Kupffer cells in the liver
Peyers patches

Question 7

What are the 4 types of movement?

Answer 7

Peristalsis
Haustral Shuttling
Mass movements
Segmentation

Question 8

What is the gastrocolic reflex

Answer 8

involves an increase in motility of the colon in response to stretch in the stomach and byproducts of digestion in the small intestine. Thus, this reflex is responsible for the urge to defecate following a mea