Physiology

at a Glance

Jeremy P. T. Ward, Roger W. A. Linden

Multiple Choice: Chapter 21 The cardiac cycle

Question 21.1 The aortic valve

A prevents the backflow of blood into the aorta during ventricular diastole
B prevents the backflow of blood into the left ventricle during ventricular diastole
C prevents the backflow of blood into the left ventricle during ventricular systole
D prevents the backflow of blood into the aorta during ventricular systole