CARDIOLOGY
MITRAL STENOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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right ventricle finishes contracting and starts to relax
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left ventricle finishes contracting and starts to relax
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Either A or B
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None of the above
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Detailed explanation-1: -As the ventricles contract, ventricular pressure exceeds arterial pressure, the semilunar valves open and blood is pumped into the major arteries. However, when the ventricles relax, arterial pressure exceeds ventricular pressure and the semilunar valves snap shut.
Detailed explanation-2: -Immediately after the blood inertia is overcome, the elevated pressures in the aorta and the pulmonary artery push the blood back toward the ventricles to close the semilunar valves. The atrioventricular valves are closed because the pressure in the atria is lower than the ventricular pressure (fig. 3.1). relaxation.
Detailed explanation-3: -The period of contraction that the heart undergoes while it pumps blood into circulation is called systole. The period of relaxation that occurs as the chambers fill with blood is called diastole.
Detailed explanation-4: -Ventricular contraction increases the pressure in the ventricle; when this pressure exceeds the pressure in the atrium, the mitral valve closes.