Question

name the process in which multiple motor units are activated in response to the increasing intensity of stimulation, increasing the strength of contraction.
o recruitment
o summation
o sustained twitch
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Explanation:

Motor - unit recruitment is the process where more motor units are activated as the intensity of stimulation increases, leading to a stronger muscle contraction. Summation refers to the addition of individual muscle twitches to increase force, and a sustained twitch is a continuous muscle contraction but not the specific term for the described process.

Answer:

Recruitment