When all four heart valves are operating correctly, the valves should open and close completely once each ____________.

Veins carry what type of blood back to the heart so the cycle can repeat?

Which of the following is the first of three electrical changes the myocardial cells experience?

The largest part of the human heart is composed of four hollow cavities referred to as the _______________________.

A normal healthy pulse pressure should be in the range of  __________.

Normal breathing is approximately how many respirations per minute in an adult?

Not having enough cardiac output can attribute to ______________.

Kidney stones are often a result of the kidney’s inability to absorb ____________.

Where is calcium stored in the body?

What artery carries deoxygenated blood to the lungs from the right ventricle?