Heart structure 1

Why do the ventricles have thicker muscle walls than the atria?

• To store more blood

• To generate higher pressure for pumping blood out of the heart

• To slow down blood flow

• To maintain a constant temperature

Why does the left ventricle have a thicker muscle wall than the right ventricle?

• It pumps blood to the brain

• It pumps blood to the entire body at high pressure

• It pumps blood at a lower pressure

• It stores oxygenated blood

What is the function of the septum in the heart?

• To pump blood

• To generate electrical impulses

• To separate oxygenated and deoxygenated blood

• To regulate heart rate

What is the basic function of all heart valves?

• To pump blood

• To store blood

• To prevent blood from flowing backwards

• To generate electrical impulses

What do the atrioventricular valves separate?

• The ventricles from the blood vessels

• The atria from the ventricles

• The right side of the heart from the left side

• The heart from the lungs

What is the name of the valve on the right side of the heart?

• Bicuspid valve

• Mitral valve

• Tricuspid valve

• Pulmonary valve

Question 7:

What is the name of the valve on the left side of the heart?

• Aortic valve

• Tricuspid valve

• Pulmonary valve

• Bicuspid valve

When do the atrioventricular valves open?

• When the ventricles contract

• When the atria contract

• When the septum contracts

• When the heart is at rest

When do the atrioventricular valves close?

• When the atria contract

• When the septum contracts

• When the ventricles contract

• When the heart is at rest

Which side of the heart pumps blood to the lungs?

• Right side

• Left side

• Both sides

• Neither side