The sinoatrial (SA) node is located in the ________.
A) aorta
B) right atrium
C) left atrium
D) right ventricle
E) interventricular septum
Correct Answer:
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Q37: The length of the cardiac cycle is
Q38: Which term means heart contraction?
A) diastole
B) tachycardia
C)
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Q43: The atrioventricular valves are closed when _.
A)
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A) oxygenated blood to
Q45: The flaplike opening in the interatrial septum
Q46: The vessel that carries oxygenated and nutrient-rich
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