About 70% of the blood that is pumped from the heart during contraction enters the ventricles while the atria
A) are contracting and ventricles are relaxing
B) and ventricles are all contracting
C) and ventricles are all relaxing
D) are relaxing and ventricles are contracting
Correct Answer:
Verified
Q39: The coronary sinus opens into the
A) right
Q40: The internal surface of the ventricles is
Q41: All of the following have the same
Q42: The first heart sound is heard just
Q43: Heart sounds are caused by
A) semilunar valves
B)
Q45: The sympathetic nervous system _ heart rate
Q46: The P wave on an electrocardiogram represents
Q47: Starling's law of the heart is a
Q48: The correct sequence for impulse transmission through
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