When renin is released from the kidney,

According to the Frank-Starling principle, the greater the end-diastolic volume the more powerful the succeeding _____

System circulation involves blood flow to and from the heart and the:

The muscle layer of the heart is the

The force that moves fluid out of capillaries is ________ pressure whereas the opposing force that moves fluid into capillaries is ________ pressure.

Depolarization of the atria corresponds to the EKG’s

Tetanic muscle contractions don’t occur in a normal cardiac muscle because

The interatrial septum divides the two atria transversely.

The right ventricle pumps blood to the

Venules feed blood into