The nurse educator is teaching a group of nursing students to assess heart sounds. Which response by a student indicates appropriate understanding of how S2 heart sounds are produced?
A. "It results from the closure of the tricuspid valve."
B. "It is a result from the closure of the semilunar valves."
C. "It results from the closure of the mitral valve."
D. "It is caused by atrial contraction and ejection of blood into the ventricles in late diastole."
Answer: B
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