A&P - Chapter 38 (Part 4)

Question 1

Gastric muscularis

Answer 1

Thick layer of muscle

Question 2

What directions/arrangements does the gastric muscularis go?

Answer 2

1. Oblique
2. Circular
3. Longitudinal

Question 3

What do the different muscle directions allow in the gastric muscularis?

Answer 3

Allow the stomach to ‘churn’ (contract) in many directions

Question 4

What are the functions of the stomach? (7)

Answer 4

1. Holding tank’ for food until it is partially digested and moved further along the GI tract
2. Secretes gastric juice to aid in digestion of food
3. Breaks food into small particles and mixes them with gastric juice
4. Secretes intrinsic factor
5. Performs limited absorption
6. Produces gastrin and ghrelin
7. Helps protect the body from pathogenic bacteria swallowed with food