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 [edit on Wikidata]

Thegeneral (spinal) somatic efferent neurons (GSE,somatomotor, orsomatic motor fibers) arise from motor neuron cell bodies in the ventral horns of thegray matter within thespinal cord. They exit the spinal cord through theventral roots, carrying motor impulses toskeletal muscle through aneuromuscular junction.^[1]

Of the somatic efferent neurons, there exist subtypes.

• Alpha motor neurons (α) targetextrafusal muscle fibers.
• Gamma motor neurons (γ) targetintrafusal muscle fibres

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

• Nerve fiber
• Efferent nerve
• General visceral efferent fiber (GVE)
• Special visceral efferent fiber (SVE)

This article incorporates text in thepublic domain frompage 849 of the 20th edition ofGray's Anatomy(1918)

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