If the right ventricle begins to pump an increased amount of blood, this soon arrives at the left ventricle, stretches it more than before, and causes it to increase its stroke volume and match that of the right. this is an example of
a) preload
b) afterload
c) contractility
d) cardiac reserve
e) none of the choices are correct.

The correct answer is option a) "preload".

Explanation:

In cardiology, the concept of preload refers to the initial stretching of the cardiomyocytes to its greatest dimensions prior to contraction. This first stretching is achieved by a difference of pressure between the ventricles, which happens by the pump of an increased amount of blood in one of the ventricles. The result is that one ventricle has a greater dimension than the other, but the blood arrives to the other and causes to increase its stroke volume and match that of the other.

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