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preganglionic

preganglionic

9.7
A nerve cell or fiber that leaves the central nervous system and reaches a nearby group of nerve cells
  • noun
  • /ˌpriːˈɡæŋɡliˌɒnɪk/
  • Specialized
: neuronas preganglionares
  • The doctor explained that the preganglionic fibers connect the spinal cord to the autonomic ganglia.

Examples

  • So if you look here in the cross section, we call these preganglionic motor neurons.

  • During the dissection, we observed the preganglionic neurons leading to the sympathetic chain.

  • In the autonomic nervous system, preganglionic neurons play a crucial role in transmitting signals.

Surface Forms

preganglionic singular
preganglionic plural

Morphology

preganglionic = ganglionic (semi-transparent) = pre + ganglion + ic

The word is transparently formed by adding pre- to the adjective 'ganglionic' to indicate location or occurrence before the ganglion.

Etymology

Preganglionic used as a noun comes from pre- 'before' and ganglion 'a knot or small group of nerve cells'. So the word names a nerve cell or fiber that sits 'before' a ganglion and sends signals to it.