Question Detail

ZOO 101 Mammalian Circulatory System Objective Question

Question

What is diastole?
Options
A Contraction of the heart muscle
B The phase where blood is ejected
C Relaxation of the heart muscle
Correct Answer
D The opening of the semilunar valves
Correct Answer

Option C is the correct answer.

Detailed Explanation

Diastole is the part of the cardiac cycle where the heart muscle relaxes and fills with blood.

Hint

This is when the heart chambers fill.

Question Info