The minimum stimulus needed to cause muscle contraction is called the __________.

Question

Quizplus · Accepted Answer

The threshold is the minimum stimulus required to cause a muscle contraction. Once this threshold is reached, a muscle fiber will depolarize and initiate an action potential, leading to the contraction of the muscle. The other options are not the minimum stimulus needed for muscle contraction - latent period refers to the delay between the stimulus and the actual contraction, twitch is a single contraction, motor unit refers to a group of muscle fibers innervated by the same motor neuron, and innervation refers to the connection between a nerve and its target muscle.

The Minimum Stimulus Needed to Cause Muscle Contraction Is Called