Motor Unit
Motor Unit: One nerve fiber (nerve cell axon) and all of the muscles cells (fibers) it innervates.
- Example - Although a single muscle cell must fire completely or not at all, force output can be calibrated by the number and size of motor units recruited.
- Saladin, K. (2012). Anatomy & Physiology: The unity of form and function. (6th ed.). New York: McGraw-Hill.
Related Terms
- Muscle contraction
- Neuromuscular junction
- Action potential
- Motor cortex
Synonyms
- Motor neuron unit
- Motor nerve unit
- Motor endplate unit
- Motor unit
