Motor nerve

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Motor nerve
Motor nerve cell from ventral horn of medulla spinalis of rabbit. The angular and spindle-shaped Nissl bodies are well shown.
Gray's	subject #183 730

Motor nerves allow the brain to stimulate muscle contraction. A motor nerve is an efferent nerve that exclusively contains the axons of somatic and branchial motoneurons, which innervate skeletal muscles (that insure locomotion) and branchial muscles (that motorize the face and neck).

[edit] See also

• Motor neuron
• Sensory nerves
• Efferent nerve

[edit] External links

• Dictionary at eMedicine motor+nerve

v • d • e Histology: nervous tissue

Neurons (gray matter): soma, axon (axon hillock, axoplasm, axolemma, neurofibril/neurofilament), dendrite (Nissl body, dendritic spine) types (bipolar, pseudounipolar, multipolar, pyramidal, Purkinje, granule) Afferent nerve/Sensory nerve/Sensory neuron (GSA, GVA, SSA, SVA, Type Ia sensory fiber), Efferent nerve/Motor nerve/Motor neuron (GSE, GVE, SVE) Alpha motor neuron, Gamma motoneurons, Upper motor neuron, Lower motor neuron), Interneuron (Renshaw) Synapses: neuropil, synaptic vesicle, neuromuscular junction, electrical synapse Sensory receptors: Free nerve ending, Meissner's corpuscle, Merkel nerve ending, Muscle spindle, Pacinian corpuscle, Ruffini ending, Olfactory receptor neuron, Photoreceptor cell, Hair cell, Taste bud Glial cells: astrocyte, ependymal cells, microglia, radial glia Myelination (white matter): Schwann cell, oligodendrocyte, nodes of Ranvier, internode, Schmidt-Lanterman incisures, neurolemma Related connective tissues: epineurium, perineurium, endoneurium, nerve fascicle, meninges