Heart Sounds Quiz

What causes the second 'dub' sound in the heart?

• Opening of the semilunar valves

• Closing of the semilunar valves

• Opening of the atrioventricular valves

• Closing of the atrioventricular valves

What is the end-systolic volume mentioned in the text?

• 50 mL

• 60 mL

• 70 mL

• 80 mL

What is the third heart sound in adults called?

• Heart murmur

• Heartbeat

• Heart rhythm

• Heart pulse

What is abnormal in adults according to the text?

• First heart sound

• Second heart sound

• Third heart sound

• Fourth heart sound

What analogy is used to describe the closing of the semilunar valves?

• Opening a door

• Cutting off a toxic relationship

• Starting a car

• Turning off a light

Which heart sound is typically associated with the closing of the atrioventricular valves?

• First heart sound

• Second heart sound

• Third heart sound

• Fourth heart sound

What is the normal range for end-diastolic volume in adults?

• 140-160 mL

• 160-180 mL

• 120-140 mL

• 100-120 mL

What is the primary cause of the first 'lub' sound in the heart?

• Opening of the semilunar valves

• Closing of the semilunar valves

• Closing of the atrioventricular valves

• Opening of the atrioventricular valves

Which heart sound is associated with the rapid filling phase of the ventricles?

• First heart sound

• Second heart sound

• Third heart sound

• Fourth heart sound

What is the primary cause of the fourth heart sound?

• Atrioventricular valve closure

• Semilunar valve closure

• Ventricular contraction

• Atrial contraction