General somatic efferent fibers

  (Redirected from Motor efferent nuclei)

The general (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 through a neuromuscular junction.[1]

General somatic efferent fibers
Scheme showing structure of a typical spinal nerve.
1. Somatic efferent.
2. Somatic afferent.
3,4,5. Sympathetic efferent.
6,7. Sympathetic afferent.
Anatomical terminology

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 alsoEdit


This article incorporates text in the public domain from page 849 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Ross, Muriel D. (April 1969). "The general visceral efferent component of the eighth cranial nerve" (PDF). Journal of Comparative Neurology. 135 (4): 453–477. doi:10.1002/cne.901350405.