Sensory nerve

From Wikipedia, the free encyclopedia

Sensory nerves are nerves that receive sensory stimuli, such as how something feels and if it is painful.

They are made up of nerve fibers, called sensory fibers (mechanoreceptor fibers sense body movement and pressure placed against the body, and nociceptor fibers sense tissue injury).

[edit] Types

Main article: Sensory fiber types

There are several types of sensory nerve fibers, depending on their modality etc. Examples are:

• Ia & II
• Ib
• Aβ
• Aδ
• C

[edit] See also

• Afferent nerve
• Motor nerve
• Sensory neuron

[edit] External links

• n_05/12566651 at Dorland's Medical Dictionary

v • d • e Histology: nervous tissue Neurons (gray matter) soma - axon (axon hillock, axoplasm, axolemma, neurofibril/neurofilament) dendrite (Nissl body, dendritic spine, apical dendrite, basal dendrite) types: bipolar - pseudounipolar - multipolar - pyramidal - Purkinje - granule Afferent nerve/Sensory nerve/Sensory neuron GSA - GVA - SSA - SVA - fibers (Ia, Ib or Golgi, II or Aβ, III or Aδ or fast pain, IV or C or slow pain) Efferent nerve/Motor nerve/Motor neuron GSE - GVE - SVE - Upper motor neuron - Lower motor neuron (α motorneuron, γ motorneuron) Synapses neuropil - synaptic vesicle - neuromuscular junction - electrical synapse - Interneuron (Renshaw) Sensory receptors Meissner's corpuscle - Merkel nerve ending - Pacinian corpuscle - Ruffini ending - Muscle spindle Free nerve ending Olfactory receptor neuron - Photoreceptor cell - Hair cell - Taste bud Glial cells Astrocyte (Radial glia) - Oligodendrocyte - Ependymal cells (Tanycytes) - Microglia Myelination (white matter) CNS: Oligodendrocyte PNS: Schwann cell - Neurolemma - Nodes of Ranvier/Internode - Schmidt-Lanterman incisures Related connective tissues epineurium - perineurium - endoneurium - nerve fascicle - meninges