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Type: Multiple-Choice
Category: Skin, Skeleton, and Muscles
Level: Grade 12
Author: mhaughey28
Last Modified: 6 years ago

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Skin, Skeleton, and Muscles Question

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Grade 12 Skin, Skeleton, and Muscles

The mechanism responsible for the size principle is
  1. larger motor neurons that contain the greatest number of muscle cells reach threshold easier than smaller neurons.
  2. larger sympathetic neurons that contain the greatest number of muscle cells reach threshold easier than smaller neurons.
  3. smaller sympathetic neurons that contain the least number of muscle cells reach threshold easier than larger neurons.
  4. smaller motor neurons that contain the least number of muscle cells reach threshold easier than larger neurons.
  5. smaller motor neurons that contain the greatest number of muscle cells reach threshold easier than larger neurons.