Circulation

interstitial fluid

Blood and ________ are physically separated.

Systole

________: ventricles contract and blood is ejected from the heart (blood pressure is at its highest)

Arterioles

________: constrict to control blood distribution.

Diastole

________: atria contract and ventricles fill (blood pressure is at its lowest)

cardiac cycle

The ________ has two phases: diastole and systole.

Venules

________: small, thin extensions of capillaries.

Veins

________: conduct blood back to the heart.

Arteries

________: conduct blood away from the heart.

Cardiac Cycle

________: events that produce a single heartbeat.