Author: Glossary
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Commissural nerve fiber
A nerve fiber that passes from one cerebral hemisphere to the other.
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Collateral nerve fiber
A small branch extending at a right angle from an axon.
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Climbing nerve fiber of the cerebellum
Afferent nerve fibers entering the cortex and synapsing with dendrites of Purkinje cells.
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Cholinergic nerve fiber
A nerve fiber that releases acetylcholine at its synapse when an impulse is transmitted. Sympathetic and parasympathetic preganglionic fibers, parasympathetic postganglionic fibers, and efferent somatic fibers ending in skeletal muscle are cholinergic.
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Adrenergic nerve fiber
A nerve fiber that releases norepinephrine at its synapse when an impulse is transmitted. Most postganglionic fibers of the sympathetic division are adrenergic.
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Nerve entrapment syndrome
Compression of a nerve or nerves resulting in nerve damage. This may cause anesthesia or pain if a sensory nerve is affected and paralysis if a motor nerve is involved. The compression may be due to physical pressure on the nerve (i.e., sleeping in a position in which a nerve is pressed upon by surrounding…
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Vasoconstrictor nerve
A nerve (usually an autonomic sympathetic nerve) conducting impulses that bring about constriction of a blood vessel.
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Sudomotor nerve
Any of the nerves that supply sweat glands.
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Secretory nerve
A nerve whose stimulation excites secretion in a gland or a tissue.
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Pressor nerve
An afferent nerve whose stimulation excites the vasoconstrictor center, thus increasing the blood pressure.