Question: When is the second sound of the heartbeat produced?
Answer: closure of semilunar valves
closure of pulmonary valve
closure of the aortic valve
Disambiguated questions and answers: question: What is typically the earlier component of the second sound of the heartbeat?
What is typically the later component of the second sound of the heartbeat?
What acoustical phenomenon within blood is associated with the second sound of the heartbeat?
answer: aortic valve closure
A2
P2
pulmonary valve closure
reverberation
reverb
Natural Questions answer: during inhalation (from the Wikipedia article "Heart sounds")