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Unformatted text preview: contracted flaccidity- all cells of a muscle are relaxed Motor Units Skeletal muscles are innervated by alpha (lower) motor neurons • cell bodies reside in brain stem or spinal cord • axons make up peripheral nerves (cranial or spinal) and synapse on muscle cells (between 2 and 150) Motor unit = alpha motor neuron and the muscle cells it innervates o smaller motor units are involved in fine motor control (e.g., tongue, finger) o larger motor units are involved in the control of larger muscle groups...
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This note was uploaded on 11/13/2010 for the course CODS 361 taught by Professor Gel during the Spring '10 term at WPUNJ.
- Spring '10