Question

multiple choice question
the frank - starling law of the heart explains the relationship between stretching of the cardiac muscle fibers and the
o duration of contraction
o amount of relaxation
o force of contraction

Explanation:

The Frank - Starling law states that the more the cardiac muscle fibers are stretched (up to a point), the greater the force of contraction. This is related to the pre - load of the heart. It does not pertain to the duration of contraction or amount of relaxation.

Answer:

force of contraction