What causes the semilunar valves to close?
A) higher pressure in the ventricles than in the atria
B) higher pressure in the aorta and pulmonary trunk than in the ventricles
C) higher pressure in the atria than in the ventricles
D) higher pressure in the ventricles than aorta and pulmonary trunk
Correct Answer:
Verified
Q82: Heart murmurs may be caused by _,a
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
Q88: Closure of the atrioventricular valves occurs at
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
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents