Quiz on Heart Valves

What is the function of heart valves?

• To pump blood throughout the body

• To allow blood to flow in only one direction to prevent backflow

• To oxygenate the blood

• To remove waste from the blood

What are the two types of valves found in the heart?

• Pulmonary and systemic valves

• Atrioventricular and semilunar valves

• Bicuspid and tricuspid valves

• Mitral and aortic valves

Which valve is also known as the bicuspid valve?

• Right AV valve

• Pulmonary semilunar valve

• Aortic semilunar valve

• Left AV valve

Where are the semilunar valves located?

• Between atria and ventricles

• Between ventricle and artery

• Between the left and right atria

• At the entrance and exit of the ventricles

What is the role of chordae tendineae during the operation of the AV valves?

• They contract to pump blood

• They relax to allow the AV valves to open

• They tighten, preventing valve cusps from everting into atria

• They oxygenate the blood passing through the valves

What anchors the AV valve cusps to the walls of the ventricles?

• Semilunar valves

• Ventricular pressure

• Chordae tendineae

• Atrial pressure

When do the AV valves open?

• During ventricular contraction

• During heart relaxation when blood passively fills the chambers

• When atrial pressure is less than ventricular pressure

• When the chordae tendineae tighten

When are the semilunar valves closed?

• During ventricular contraction

• When the AV valves are open

• During heart relaxation

• When atrial pressure is greater than ventricular pressure

What causes the valves in the heart to open and close?

• The movement of the chordae tendineae

• The contraction of the atria

• Pressure changes in the heart

• The filling of the ventricles with blood

What medical device is shown in the X-ray image?

• Pacemaker

• Stent

• Artificial heart valves

• Cochlear implant