Closure of the atrioventricular valves occurs at the end of diastole/beginning of systole.
Correct Answer:
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Q83: Systole refers to the _ of the
Q84: The myocardium acts as a single,functioning unit
Q85: The ventricles completely empty when they contract
Q86: What structures keep the AV valves from
Q87: What causes the semilunar valves to close?
A)higher
Q89: During isovolumetric ventricular relaxation
A)left ventricular pressure exceeds
Q90: What occurs when the pressure in the
Q91: During isovolumetric ventricular contraction ventricular pressure is
A)increasing.
B)decreasing.
C)unchanged.
Q92: The amount of blood ejected by the
Q93: The heart spend more time in diastole
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