preganglionic

preganglionic
Situated proximal to or preceding a ganglion; referring specifically to the p. motor neurons of the autonomic nervous system (located in the spinal cord and brainstem) and the p., myelinated nerve fibers by which they are connected to the autonomic ganglia.

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pre·gan·gli·on·ic -.gaŋ-glē-'än-ik adj anterior or proximal to a ganglion specif being, affecting, involving, or relating to a usu. myelinated efferent nerve fiber arising from a cell body in the central nervous system and terminating in an autonomic ganglion compare POSTGANGLIONIC

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adj.
describing fibres in a nerve pathway that end in a ganglion, where they form synapses with postganglionic fibres that continue the pathway to the effector organ, muscle or gland.

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pre·gan·gli·on·ic (pre″gang-gle-onґik) situated anterior or proximal to a ganglion; said especially of autonomic nerve fibers so located.

Medical dictionary. 2011.

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Look at other dictionaries:

  • preganglionic — [prē gaŋ΄glē än′ik] adj. Zool. of or pertaining to nerve fibers going from the spinal cord to sympathetic ganglia …   English World dictionary

  • preganglionic fibers — preganglionic nerve fibers neurofibrae preganglionicae …   Medical dictionary

  • Preganglionic fibers — Infobox Nerve Name = PAGENAME Latin = neurofibrae postganglionicae GraySubject = GrayPage = Caption = Autonomic nervous system innervation, showing the sympathetic and parasympathetic (craniosacral) systems, in red and blue, respectively Caption2 …   Wikipedia

  • preganglionic — adjective Date: 1895 proximal to a ganglion; specifically of, relating to, or being a usually medullated axon arising from a cell body in the central nervous system and terminating in an autonomic ganglion compare postganglionic …   New Collegiate Dictionary

  • preganglionic — adj. * * * …   Universalium

  • preganglionic — adjective Describing the nerve fibres that supply a ganglion …   Wiktionary

  • preganglionic — pre·ganglionic …   English syllables

  • preganglionic — adj. describing fibres in a nerve pathway that end in a ganglion, where they form synapses with postganglionic fibres that continue the pathway to the effector organ, muscle or gland …   The new mediacal dictionary

  • preganglionic — …   Useful english dictionary

  • preganglionic neurons — neurons in the autonomic nervous system whose cell bodies lie in the central nervous system and whose efferent fibers terminate in the autonomic ganglia. See also pars parasympathica divisionis autonomici systematis nervosi, under pars …   Medical dictionary

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