Which statement accurately describes a condition of the heart chambers during the cardiac cycle?
A) The right atrium and the right ventricle contract simultaneously.
B) The left atrium contracts before the right atrium.
C) All four chambers of the heart contract at the same time.
D) All four chambers of the heart are in diastole at the same time.

Question

Quizplus · Accepted Answer

During the cardiac cycle, there are phases where all four chambers of the heart are in diastole, which means they are relaxed and filling with blood. This does not occur simultaneously with contraction (systole), but rather is a distinct phase of the cardiac cycle.

Which Statement Accurately Describes a Condition of the Heart Chambers