The first heart sound is due to turbulence in the blood resulting from closure of the semilunar valves.
Correct Answer:
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Q14: The heart lies within the
A) mediastinum
B) pleural
Q15: The base of the heart is more
Q16: All chambers of the heart are in
Q17: Baroreceptors and chemoreceptors send signals to the
Q18: The muscular tissue of the heart is
A)
Q20: The innermost layer of the heart wall
Q21: The chordae tendineae and papillary muscles have
Q22: The ascending aorta is continuous with the
A)
Q23: The chamber of the heart that receives
Q24: The coronary arteries that supply oxygenated blood
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