Question

multiple choice question
the law that states a muscle fiber contracts completely or not at all, with the same amount of force regardless of the strength of the stimulus, as long as the threshold is reached, is the

all - or - none law
threshold law
second law of muscle contraction
first law of muscle contraction

Explanation:

The all - or - none law in muscle physiology states that a muscle fiber contracts completely or not at all, with the same force once the threshold stimulus is reached. There is no such thing as the threshold law in this context, and there are no widely - known "first" or "second" laws of muscle contraction with this specific definition.

Answer:

A. all - or - none law