A level PE
- Created by: molly beresford
- Created on: 09-11-17 10:13
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- The motor unit & skeletal muscle contraction
- The muscle fibers are stimulated by its axon
- A motor unit is made up of the muscle fibers it stimulates and the motor neuron
- Motor neurons are specialized cells which transmit nerve impulses to a group of muscle fibers
- A motor unit is made up of the muscle fibers it stimulates and the motor neuron
- The muscle fibers are stimulated by its axon
- All or none law- depending on whether the stimulus is above a threshold all the muscle fibers will give a complete contraction or no contraction
- A skeletal muscle can only contract when stimulated by an electrical impulse
- This is sent from the central nervous system
- A skeletal muscle can only contract when stimulated by an electrical impulse
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