MOTOR UNIT DEFINITIONS - OCR P.E. A-level/AS - Flashcards in A Level and IB Physical Education

Neuron

a nerve cell

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Axon

carries nerve impulse from cell body to the neuromuscular junction

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Neuromuscular junction

point where motor neurone communicates with muscle fibre across a synapse

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Synapse

gap between motor neurone and skeletal muscle

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Motor End-plate

Area of muscle fibre that establishes synaptic contact with motor neurone .

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Type 1 muscle fibre

slow oxidative - small, low force of contraction over a long period of time

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Type 2A muscle fibre

fast oxidative glycolytic - force and time is between that of type 1 and 2B

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Type 2B muscle fibre

fast glycolytic - large, greatest force of contraction over a small period of time

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Other cards in this set

carries nerve impulse from cell body to the neuromuscular junction

Axon

point where motor neurone communicates with muscle fibre across a synapse

gap between motor neurone and skeletal muscle

Area of muscle fibre that establishes synaptic contact with motor neurone .

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