The second heart sound is associated with the closure of which valves, and has two components: first is closure of the aortic valve and second is closure of the pulmonic valve.

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Prepare for the Basic Arrhythmias and 12 Lead EKG Exam. Study with detailed explanations, flashcards, and multiple choice questions to understand arrhythmias better. Get ready for your exam!

Multiple Choice

The second heart sound is associated with the closure of which valves, and has two components: first is closure of the aortic valve and second is closure of the pulmonic valve.

The second heart sound comes from the closure of the semilunar valves at the end of systole, marking the start of diastole. It has two components because the aortic valve closes first (A2) and then the pulmonic valve closes (P2). In a normal heartbeat, A2 is followed by P2, and this pair can split, especially with inspiration, when P2 is delayed slightly. S2 is typically shorter and higher-pitched than S1.

This sound is distinct from S1, which is produced by the closure of the AV valves at the beginning of systole, and from S3 and S4, which are gallop sounds related to ventricular filling and atrial contraction, respectively.

The second heart sound is associated with the closure of which valves, and has two components: first is closure of the aortic valve and second is closure of the pulmonic valve.

Prepare for the Basic Arrhythmias and 12 Lead EKG Exam. Study with detailed explanations, flashcards, and multiple choice questions to understand arrhythmias better. Get ready for your exam!

The second heart sound is associated with the closure of which valves, and has two components: first is closure of the aortic valve and second is closure of the pulmonic valve.

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