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With age, the tissues making up a heart valve can lose flexibility and become stiff and narrowed while retaining their one-way closure properties. Suppose a man's aortic valve is affected by this condition but his ventricles do not change their force of contraction. Which of the following will likely happen?

A. Blood will flow more rapidly than normal through the atria and right ventricle.

B. Pressure within the left ventricle will increase during the systole phase.

C. The body's total blood volume will drop.

D. Volume of blood flowing out of the left ventricle during a contraction will increase.

Respuesta :

Diatonic254

B

Systole is the phase of the cardiac cycle when the left ventricle of the heart contracts to pump blood to tissues through the aorta.

Explanation:

Because the aorta is incapable of contracting and relaxing with pumping of blood as supposed to, it is unable to accommodate the pulse of blood pressure as the left ventricle contracts and relaxes to pump blood to the tissues. This creates more resistance to blood flow in the aorta as the heart pumps blood especially during systole. The blood pressure in the left ventricle will rise because to pump the same volume of blood, this ventricle will need to pump harder to beat the resistance.

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