Heart Valves and Their Functions

The video tutorial explains the two sets of heart valves: atrioventricular (AV) valves and semilunar valves. The AV valves, including the tricuspid and mitral valves, are located between the atria and ventricles and are anchored by chordae tendineae to papillary muscles. The semilunar valves, including the pulmonary and aortic valves, are located between the ventricles and the vessels leaving the heart. These valves do not have chordae tendineae. The tutorial provides a detailed look at the structure and function of these valves, emphasizing their role in preventing backflow of blood during heart contractions.

What is the function of the AV valves in the heart?

• To separate the atria from the ventricles

• To connect the ventricles to the arteries

• To regulate blood flow between the lungs and heart

• To pump blood into the aorta

Which valve is located on the right side of the heart?

• Pulmonary valve

• Tricuspid valve

• Aortic valve

• Mitral valve

What are chordae tendineae?

• Blood vessels

• Valves in the heart

• Collagen strings anchoring valve cusps

• Muscles in the heart

How many cusps does the tricuspid valve have?

• Five

• Two

• Three

• Four

What is another name for the mitral valve?

• Pulmonary valve

• Tricuspid valve

• Bicuspid valve

• Aortic valve

Where are semilunar valves located?

• In the atria

• Between the ventricles and the vessels leaving the heart

• In the veins

• Between the atria and ventricles

Which semilunar valve is located between the right ventricle and the pulmonary trunk?

• Aortic valve

• Mitral valve

• Tricuspid valve

• Pulmonary valve

What is a key difference between AV valves and semilunar valves?

• AV valves have chordae tendineae, semilunar valves do not

• Semilunar valves have chordae tendineae, AV valves do not

• Both have chordae tendineae

• Neither have chordae tendineae

Which valve is located between the left ventricle and the aorta?

• Pulmonary valve

• Tricuspid valve

• Aortic valve

• Mitral valve

Why is it important for the chordae tendineae to remain taut?

• To prevent the valve cusps from inverting into the atria

• To allow blood flow into the ventricles

• To close the aortic valve

• To open the semilunar valves