7:8 Circulatory System

The lower part of the septum is called the interatrial septum.

• True

• False

The right atrium receives oxygenated blood from the lungs.

• True

• False

The period of ventricular contraction in the heart is called diastole.

• True

• False

The aorta is the largest artery in the body.

• True

• False

Veins are more muscular and elastic than other vessels.

• True

• False

Capillaries allow oxygen and nutrients to pass through to the cells because the walls of capillaries contain only one layer of cells.

• True

• False

Some capillaries contain valves.

• True

• False

The average adult has nine to ten quarts of blood.

• True

• False

Fibrinogen and prothrombin are blood proteins necessary for the clotting of blood.

• True

• False

The red color of blood is the result of hemoglobin carrying oxygen.

• True

• False