Dorsal horns

Dorsal horns

Item #2
Latin	cornu posterius medullae spinalis
Gray's	subject #185 753
System
MeSH	[1]
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The dorsal horn (posterior column, posterior cornu, posterior horn) of the spinal cord is dorsal (more towards the back) to the anterior horn. It receives several types of sensory information from the body, including light touch, proprioception, and vibration. This information is sent from receptors of the skin, bones, and joints through sensory neurons that synapse in the dorsal root ganglion.

Anatomy[]

The posterior grey horn is subdivided into these laminae. Below are several named examples of each lamina.

Marginal lamina (Lamina I)
Substantia gelatinosa (Lamina II)
Nucleus proprius (Laminae III,IV,V)
Column of Clarke (Lamina VII)

The other laminae are located in other regions of grey matter in the spinal cord.

See also[]

Spinal cord

epidural space, dura mater, subdural space, arachnoid mater, subarachnoid space, pia mater, denticulate ligaments, conus medullaris, cauda equina, filum terminale, cervical enlargement, lumbar enlargement, anterior median fissure, dorsal root, dorsal root ganglion, dorsal ramus, ventral root, ventral ramus, sympathetic trunk, gray ramus communicans, white ramus communicans

grey matter: central canal, substantia gelatinosa of Rolando, reticular formation, substantia gelatinosa centralis, interneuron, anterior horn, lateral horn, posterior horn (column of Clarke, dorsal spinocerebellar tract)

white matter: anterior funiculus: descending (anterior corticospinal tract, vestibulospinal fasciculus, tectospinal tract), ascending (anterior spinothalamic tract, anterior proper fasciculus)

lateral funiculus: descending (lateral corticospinal tract, rubrospinal tract, olivospinal tract), ascending dorsal spinocerebellar tract, ventral spinocerebellar tract, spinothalamic tract, lateral spinothalamic tract, anterior spinothalamic tract, spinotectal tract, posterolateral tract, lateral proper fasciculus, medial longitudinal fasciculus

posterior funiculus: fasciculus gracilis, fasciculus cuneatus, posterior proper fasciculus

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