Question

Briefly Define preload

Answer 1

Preload:

The volume of blood in the ventricle at the end of diastole.

OR

The load to which a muscle is subjected before shortening.

OR

The mechanical state of the heart at the end of diastole

OR

The stretch of ventricular muscle fibers at end diastole

OR

The amount of hemodynamic pressure upstream from the heart

OR

The stretch of ventricular muscle fibers at end diastole

OR

The load to which a muscle is subjected before shortening

OR

The tensile force in the neck of a tightened screw that locks the screw in place without exceeding the screw material's elastic limit

Hope helps!-Aparri

Answer 2

In cardiac physiology, preload is the end diastolic volume that stretches the right or left ventricle of the heart to its greatest dimensions under variable physiologic demand. ... Atrial pressure is a surrogate for preload.