Question Detail

ZOO 101 Muscular Tissues Objective Question

Question

How does smooth muscle function in blood vessels?
Options
A It propels blood by strong, rhythmic contractions.
B It regulates the amount of fluid flowing through them by contracting or relaxing.
Correct Answer
C It provides a rigid structure for the vessel.
D It generates heat to warm the blood.
Correct Answer

Option B is the correct answer.

Detailed Explanation

In blood vessels, smooth muscle regulates the amount of fluid flowing through them by changing the diameter of the vessel.

Hint

This process is called vasoconstriction and vasodilation.

Question Info