Prevents Backflow Into The Left Ventricle. What causes backflow of blood into the left ventricle? 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 aortic valve sits between the left ventricle and the aorta and prevents backflow of blood. When the ventricles contract, the blood should go out of the heart and not back to the atrium. Prevents backflow into the right.