Heart Chambers and Valves Quiz

What is the function of the atria in the heart?

• Pump blood to the lungs

• Receive blood returning to the heart

• Separate the left and right sides of the heart

• Force blood out of the heart into arteries

What is the purpose of the auricles in the atria?

• To connect the atria and ventricles

• To increase the blood volume capacity of the atria

• To store oxygenated blood

• To create a barrier between chambers

What is the function of the ventricles in the heart?

• Receive blood returning from the lungs

• Pump blood into veins

• Force blood out of the heart into arteries

• Separate the atria from the ventricles

Which wall separates the left and right atrium?

• Interventricular septum

• Atrioventricular septum

• Interatrial septum

• Coronary sulcus

Where is the atrioventricular (coronary) sulcus located?

• Between the right and left ventricles

• Between the atria and ventricles

• Between the left atrium and left ventricle

• Around the right ventricle only

Which veins return blood to the right atrium?

• Pulmonary veins

• Coronary veins

• Superior and inferior vena cavae

• Ventricular veins

What does the tricuspid valve do?

• Prevents backflow from the left atrium to the left ventricle

• Prevents blood from moving backward from the right ventricle to the right atrium

• Allows blood to flow between the left atrium and left ventricle

• Prevents backflow into the pulmonary arteries

Why is the right ventricle's myocardium thinner than the left?

• It pumps blood a shorter distance

• It requires more force to pump blood to the lungs

• It does not need to pump blood

• It only receives deoxygenated blood

What does the pulmonary valve do?

• Prevents backflow of blood into the left atrium

• Prevents blood from moving backward into the right ventricle

• Allows blood to flow into the left ventricle

• Pushes blood into the aorta

Where does the left atrium receive blood from?

• Right ventricle

• Pulmonary veins

• Coronary arteries

• Superior vena cava