1.8 Flashcards
What are the two sides of the heart separated by?
A septum
The cardiac cycle consists of three stages:
atrial systole
ventricular systole
cardiac diastole
Definition of atrial systole
contraction of the atria by which blood is forced into the ventricles
definition of ventricular systole
The contraction of the ventricles, during which blood is forced into the aorta and pulmonary artery.
Which valves close during ventricular systole to prevent back flow of the blood and which open
Close= atrioventricular valves Open= semi-lunar valves
What are the contraction and relaxation of the chambers of the heart called?
Systole and Diastole
Which blood vessels carry blood away from the heart?
The aorta and the pulmonary artery
What prevents backflow of the blood into the heart?
The semilunar valves
what prevents backflow?
The semilunar valves
