Lecture 3 - Part 2 MC

Question 1

Where does the majority of digestion and absorption of nutrients occur in the human body?
A) Stomach
B) Small intestine
C) Large intestine
D) Esophagus

Answer 1

Correct Answer: B

Question 2

What is the function of goblet cells in the small intestine?
A) They absorb nutrients from chyme.
B) They produce a mucous that protects the intestine from acidic chyme.
C) They secrete digestive enzymes.
D) They convert chyme into less acidic material.

Answer 2

Correct Answer: B

Question 3

How does the surface area of the small intestine compare to the size of a tennis court?
A) It is about half the size.
B) It is about the same size.
C) It is twice the size.
D) It is unrelated in size.

Answer 3

Correct Answer: B

Question 4

What role do the villi play in the small intestine?
A) They decrease the surface area for absorption.
B) They secrete digestive enzymes.
C) They increase the absorptive surface area significantly.
D) They protect the intestine from bacteria.

Answer 4

Correct Answer: C

Question 5

Microvilli in the small intestine serve to increase the surface area for absorption by how many times?
A) 5 times
B) 10 times
C) 20 times
D) 30 times

Answer 5

Correct Answer: C

Question 6

Approximately what percentage of ingested carbohydrates, fats, and proteins are absorbed in the small intestine?
A) 50%
B) 75%
C) 90%
D) 100%

Answer 6

Correct Answer: C

Question 7

What happens to fats after they are absorbed in the small intestine?
A) They are immediately released into the bloodstream.
B) They are stored in the liver for later use.
C) They first pass through the lymphatic system.
D) They are converted into proteins.

Answer 7

Correct Answer: C

Question 8

What is a lacteal in the context of the small intestine?
A) A type of enzyme that digests lactose.
B) A lymphatic vessel that aids in the transport of absorbed fats.
C) A specialized microvillus for sugar absorption.
D) A hormone that stimulates intestinal movement.

Answer 8

Correct Answer: B