General somatic efferent fibers

General somatic efferent fibers
General somatic efferent fibers
Gray799.svg
Scheme showing structure of a typical spinal nerve.
1. Somatic efferent.
2. Somatic afferent.
3,4,5. Sympathetic efferent.
6,7. Sympathetic afferent.
Gray's subject #190 849

The *spinal* somatic efferent neurons (GSE, 'somatomotor, or somatic motor fibers), arise from motor neuron cell bodies in the ventral horns of the gray matter within the spinal cord. They exit the spinal cord through the ventral roots, carrying motor impulses to skeletal muscle.

Of the somatic efferent neurons, there exist subtypes.

Cranial nerves also supply their own somatic efferent neurons to the extraocular muscles and some of the muscles of the tongue.

See also

References

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v · d · eHistology: nervous tissue (TA A14, GA 9.849, TH H2.00.06, H3.11)
CNS
General

Myelination: Oligodendrocyte

Astrocyte (Radial glial cell) · Ependymal cells (Tanycyte) · Microglia
Other
PNS
General
Posterior (Root, Ganglion, Ramus) · Anterior (Root, Ramus) · rami communicantes (Gray, White) · Autonomic ganglion (Preganglionic nerve fibers · Postganglionic nerve fibers)
Neurons/
nerve fibers
Parts
Types
Termination
Synapse

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)

M: PNS

anat(h/r/t/c/b/l/s/a)/phys(r)/devp/prot/nttr/nttm/ntrp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug(N1B)

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