Which of the Following Describes the Effect of End -Diastolic

question 136

Multiple Choice

Which of the following describes the effect of end -diastolic volume on stroke volume?

• A) A decrease in end -diastolic volume creates a vacuum drawing more blood into the ventricle increasing stroke volume.
• B) A decrease in end -diastolic volume allows ventricular muscle cells to relax more during diastole, allowing more blood to return to the heart increasing stroke volume.
• C) A decrease in end -diastolic volume allows cardiac muscle to relax, conserving energy for the next contraction, thereby increasing stroke volume of that next contraction.
• D) An increase in end -diastolic volume stretches ventricular muscle cells to lengths greater than optimum, decreasing the strength of contraction and thereby decreasing stroke volume.
• E) An increase in end -diastolic volume stretches ventricular muscle cells to lengths closer to optimum, increasing the strength of contraction and thereby increasing stroke volume.

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Definitions:

Equilibrium Quantity

The amount of products or services available and sought after at the market's balance price.

Equilibrium Quantity

The quantity of goods or services supplied and demanded at the equilibrium price, where supply equals demand.

Excess Demand

A scenario in which the demand for a product or service surpasses the supply available at the existing price.

Surplus

An excess of production or supply over demand.