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14 Cards in this Set
- Front
- Back
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nerve fibers can be classified based on their ____, degree of ____, and speed of ____
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diameter - myelination - conduction
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the larger the axon diameter,
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the faster the impulse travel
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____ axons conduct impulse more rapidly
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myelinated
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3 fiber types
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type A - type B - type C
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type A fibers have ____ diameter axon with thick ____ ____
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large - myelin sheath
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type A fibers, impulse travels at
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15 to 150 meter per sec
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type A fibers are ____ & ____ fibers serving the ___, ___, and ___
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sensory - motor - skin - muscles - joints
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type B fibers have ____ diameter axons and is lightly ____
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intermediate - myelinated
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type B fibers, impulse travels at
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3 to 15 meters per sec
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type C fibers have ____ diameter axon and is ____
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small - unmyelinated
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type C fibers, impulse travels at
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1 meter per sec or less
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2 types of neuronal circuits
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converging - diverging
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in converging circuits, many incoming ____ send impulses to
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fibers - the same neuron
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in diverging circuits, ____ incoming fiber triggers responses in increasing numbers of neurons farther down the circuit
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1
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