Practice Quiz: The Heart

How many chambers does the heart have?

• 2

• 4

• 6

• 8

What is the function of the right atrium?

• It pumps oxygen-rich blood to the rest of the body.

• It receives oxygen-rich blood from the lungs.

• It pumps oxygen-poor blood toward the lungs.

• It receives oxygen-poor blood from the body.

Which side of the heart is responsible for pumping oxygen-rich blood back from the lungs into the left side of the heart?

• The right side loop

• The left side loop

• The right atrium

• The left ventricle

What must the cardiac muscle do to move blood through the heart?

• It needs to relax completely.

• It needs to contract in an organized way.

• It needs to pump blood into the atria.

• It needs to push blood out of the heart without filling the ventricles.

What is the function of the valves in the heart?

• To pump blood throughout the body

• To stop blood from flowing backward

• To oxygenate the blood

• To remove waste from the blood

How many valves are there in the heart?

• Two

• Three

• Four

• Six

What do the atrioventricular (AV) valves prevent?

• Blood from moving from the ventricles to the atria

• Blood from moving from the atria to the ventricles

• Blood from flowing back from the arteries into the ventricles

• Blood from flowing back from the ventricles into the arteries

Where are the semilunar (SL) valves found?

• In the veins entering the heart

• In the arteries leaving the heart

• Between the atria and the ventricles

• Within the capillaries