"Systole" and "diastole" refer to the _______ and _______,respectively,of the _______ in mammals.
A) contraction;relaxation;ventricles
B) relaxation;contraction;ventricles
C) relaxation;contraction;atria
D) contraction;relaxation;atria
E) polarization;depolarization;S-A and A-V nodes

Question

Quizplus · Accepted Answer

Systole refers to the contraction of the heart muscles, specifically the ventricles, while diastole refers to the relaxation of the heart muscles, specifically the ventricles. Therefore, the best option is A, which correctly identifies the order and location of contraction and relaxation.

"Systole" and "Diastole" Refer to the _______ and _______,Respectively,of the _______

"Systole" and "Diastole" Refer to the ___ and _,Respectively,of the _____