Part 1 of 4 - Chapter 2 MC 44.0 Points
Question 1 of 25
4.0 Points
The gastric secretion, pepsin, is necessary for
A. preventing peptic ulcer formation.
B. protein digestion.
C. vitamin B-12 absorption.
D. destruction of harmful bacteria and viruses.
Answer Key:B
Question 2 of 25
4.0 Points
The ______ layer of the GI tract wall contains glands, blood vessels, and nerves.
A. muscle
B. serosa
C. villa
D. submucosa
, Answer Key:D
Question 3 of 25
4.0 Points
The stomach is protected from digesting itself by producing
A. bicarbonate only when food is in the stomach.
B. a thick layer of mucus to coat the lining of the stomach.
C. hydroxyl ions to neutralize the acid.
D. antipepsin that destroys digestive substances.
Answer Key:B
Question 4 of 25
4.0 Points
Which of the following organs is NOT part of the gastrointestinal organ system?
A. pancreas
B. small intestine
C. kidneys
D. liver
Answer Key:C