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Neuromuscular Junction
- * Neuromuscular junction is the site where motor axons terminate on individual muscle cells.
- Axons from a single neuron innervate muscle cells throughout the muscle; any given muscle has multiple motor units.
- The innervation ratio refers to the number of muscle cells a single motor neuron innervates; in general, the smaller this number, the finer the motor control.
- Small innervation ratios produce fine motor control, such as for eye muscle control.
- Whereas large innervation ratios produce gross motor control, such as for hamstring muscle knee flexion.