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dorsal root of spinal cord

Go to external page http://purl.obolibrary.org/obo/UBERON_0002261

The dorsal roots contain afferent sensory axons. The dorsal roots of each side continue outwards, along the way forming a dorsal root ganglion (also called a spinal ganglion). [ ]

Term info

Label

dorsal root of spinal cord

Synonyms
  • dorsal root
  • dorsal root of spinal nerve
  • dorsal spinal nerve root
  • dorsal spinal root
  • posterior root of spinal nerve
  • radix dorsalis
  • radix posterior (nervus spinalis)
  • radix sensoria (nervus spinalis)
  • sensory root of spinal nerve
database cross reference
Subsets

uberon_slim, pheno_slim, vertebrate_core

depicted by

http://purl.obolibrary.org/obo/Spinal_nerve.svg

external definition

In anatomy and neurology, the dorsal root (or posterior root) is the afferent sensory root of a spinal nerve. At the distal end of the dorsal root is the dorsal root ganglion, which contains the neuron cell bodies of the nerve fibres conveyed by the root. If the dorsal root of a spinal nerve were severed it would lead to numbness in certain areas of the body. The lateral division of the dorsal root contains lightly myelinated and unmyelinated axons of small diameter. These transmit pain and temperature sensation from the body. These fibers cross through the anterior white commissure to form the Anterior lateral system in the lateral funiculus. The medial division of the dorsal root contains myelinated axons of larger diameter. These transmit information of discriminative touch, pressure, vibration, and conscious proprioception originating from spinal levels C2 through S5. These fibers are pushed in towards the posterior medial sulcus to form the fasciculus gracilis and the fasciculus cuneatus. [WP,unvetted][Wikipedia:Posterior_root_of_spinal_nerve].

has related synonym

root dorsali nervi spinalis, dorsal roots, radix posterior, sensory spinal root, radix posterior nervi spinalis, root sensoria nervi spinalis

id

UBERON:0002261