Cardiovascular System

Which of the following is a function of the cardiovascular system?

• transportation of oxygen

• removal of carbon dioxide

• assistance with immune function

• all of the above

The tunica media is the layer in a blood vessel that contains smooth muscle cells.

• True

• False

The SA node of the heart is also called the pacemaker.

• True

• False

A stroke occurs when blood flow to the brain stops.

• True

• False

High blood pressure is also called hypertension.

• True

• False

Blood returns to the heart through veins.

• True

• False

In blood pressure measurement, diastolic pressure is heard first.

• True

• False

The myocardium makes up about two-thirds of the heart muscle.

• True

• False

Deoxygenated blood first enters the heart at the left atrium.

• True

• False

The aortic valve is a semilunar valve.

• True

• False