Term
| upper motor neurons make synpatic connections on: |
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Definition
| the lower motor neuron in the spinal cord |
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Term
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Definition
| have cell bodies in the ventral horn and axons in the ventral root |
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Term
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Definition
| makes a synpatic connection with a few fibers in a skeletal muscle |
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Term
| the electromyogram (EMG) records: |
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Definition
| action potential from the contracting uscle fibers |
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Term
| you recorded an EMG and a hand movement. in this system an event displayed on the screen to the left takes place before an invite to the right in your recordings: |
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Definition
| the EMG was recorded before the hand movement |
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Term
| assume that the a twitch involves a contraction of some portion of the fibers in the muscle. what happens to muscle tension when the number of contracting muscle fibers increases? |
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Definition
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Term
| a muscle contraction created pressure in the hand dynamometer. when compared with a small response the larger dynamometer signal was created by: |
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Definition
| more muscle fibers contracting |
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Term
| an increase in EMG amplitude was correlated with: |
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Definition
| an increase in dynamometer pressure |
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Term
| an increase in dynamometer pressure was produced by: |
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Definition
| more muscle fibers contracting |
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Term
| increasing the number of active motor units: |
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Definition
| makes more muscle fibers contract |
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Term
| upper motor neurons recruit more motor units into a contraction response by: |
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Definition
| stimulating more motor neurons |
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