Posterior horn of spinal cord
Cross section of the spinal cord. The posterior horn is the upper protrusion of grey matter, labeled with "2"
Latin	cornu posterius medullae spinalis
Gray's	subject #185 753

The posterior horn (posterior cornu, dorsal horn, spinal dorsal horn) of the spinal cord is the dorsal (more towards the back) grey matter of the spinal cord. 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 whose cell bodies lie in the dorsal root ganglion.

[edit] 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)

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

[edit] Additional images

Section of the medulla oblongata through the lower part of the decussation of the pyramids

[edit] See also

• Posterior column-medial lemniscus pathway
• Posterior horn of lateral ventricles
• Anterior horn

v • d • e Anatomy of torso (primarily): the spinal cord (TA 14.1.02, GA 9.749) External, dorsal Posterior median sulcus · Posterolateral sulcus Grey matter/ Rexed laminae I-VI: Posterior horn I: Marginal nucleus · II: Substantia gelatinosa of Rolando · III+IV: Nucleus proprius · Spinal lamina V · Spinal lamina VI VII: Lateral horn Intermediolateral nucleus · Posterior thoracic nucleus VIII-IX: Anterior horn Interneuron · Alpha motor neuron (Onuf's nucleus) X: Other Central gelatinous substance · Gray commissure Central canal White matter somatic/ ascending (blue) Posterior/PCML: touch: Gracile · Cuneate Lateral: proprioception: Spinocerebellar (Dorsal, Ventral) · pain/temp: Spinothalamic (Lateral, Anterior) · Posterolateral (Lissauer) · Spinotectal Spinoreticular tract · Spino-olivary tract motor/ descending (red) Lateral: Corticospinal (Lateral) · Ep (Rubrospinal, Olivospinal) Anterior: Corticospinal (Anterior) · Ep (Vestibulospinal, Reticulospinal, Tectospinal) both Anterior white commissure External, ventral Anterior median fissure External, general Cervical enlargement · Lumbar enlargement · Conus medullaris · Filum terminale · Cauda equina

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