posterior horn

(redirected from Posterior columns)
Also found in: Encyclopedia.

pos·te·ri·or horn

1. the occipital or posterior division of the lateral ventricle of the brain, extending backward into the occipital lobe;
See also: posterior column.
2. the posterior horn or gray column of the spinal cord as appearing in cross section. The posterior horn [TA] or dorsal horn [TAalt] contains spinal laminae I-VI [TA] of Rexed. The nuclei of the posterior horn are the marginal nucleus [TA] (nucleus marginalis [TA]), gelatinous substance [TA] (substantia gelatinosa [TA]), nucleus proprius [TA], secondary visceral grey substance [TA] (substantia visceralis secundaria [TA]), internal basilar nucleus [TA] (nucleus basilar internus [TA]), medial cervical nucleus [TA] (nucleus cervicalis medialis [TA]), posterior nucleus of lateral funiculus [TA] (nucleus posterior funiculi lateralis [TA]), and the lateral cervical nucleus.

posterior horn

Etymology: L, behind, cornu, horn
the horn-shaped projection of gray matter in the posterior region of the spinal cord. It relays information related to touch and pressure from muscles and regulates precise movement and unconscious proprioception. Also called dorsal column, dorsal horn, posterior column.

pos·te·ri·or horn

(pos-tēr'ē-ŏr hōrn)
The posterior or occipital division of the lateral ventricle of the brain, extending backward into the occipital lobe; the posterior gray column of the spinal cord as it appears in cross section.
Synonym(s): cornu posterius.

horn

(horn)
A cutaneous outgrowth composed chiefly of keratin; a hornlike projection. Synonym: cornu

horn of Ammon

Hippocampus.

anterior horn

The main column of neuron cell bodies and unmyelinated cell processes ( gray matter) running through the ventral quadrant of each half of the spinal cord. In stained cross-sections of spinal cord, the gray matter forms the rough shape of a butterfly; the anterior horns are the lower wings.
Synonym: ventral horn See: spinal cord

cicatricial horn

A cutaneous horn originating in scar tissue.

cutaneous horn

A hard, horny outgrowth from the skin. It is slow-growing, benign, and may be small or large, 10 to 12 cm, in diameter.

dorsal horn

The main column of neuron cell bodies and unmyelinated cell processes (ie, gray matter) running through the dorsal quadrant of each half of the spinal cord. In stained cross-sections of spinal cord, the gray matter forms the rough shape of a butterfly; the dorsal horns are the upper wings.
Synonym: posterior horn See: spinal cord

intermediolateral horn

Lateral horn.

lateral horn

A column of neuron cell bodies and unmyelinated cell processes (ie, gray matter) running through the lateral quadrant of spinal cord segments C8–L2 In stained cross-sections of spinal cord, the lateral horns form a small bulge of gray matter between the dorsal and ventral horns. The lateral horns contain the preganglionic cell bodies of the sympathetic nervous system.
Synonym: intermediolateral horn; intermediolateral cell column; zona intermedia See: spinal cord

posterior horn

Dorsal horn.

sebaceous horn

A hard protrusion from a sebaceous gland.

uterine horn

Either of the two upper corners of the uterus into which the uterine tubes enter.

ventral horn

Anterior horn.

warty horn

A hard outgrowth from a wart.
References in periodicals archive ?
COMBINING THE ANTERIOR, MIDDLE AND POSTERIOR COLUMNS IN AIRWAY ASSESSMENT
Importantly, when anterior, middle and posterior columns test are all included in the assessment, the correlation with difficult intubation is closest (6,9,10).
By integrating common tests reflecting the anterior, middle and posterior columns within the model, the practitioner may be better positioned to understand the complexity of direct laryngoscopy in both normal and difficult airway scenarios.
Denny-Brown (6) reported degeneration in the dorsal root ganglia with secondary involvement of the posterior root, peripheral nerve and posterior columns of the spinal cord in one case.
The preoperative goals were: a stable rather than an anatomical reduction, to support bone loss with autograft or allograft, and to stabilize the anterior and posterior columns with cannulated long and large (greater than 4.
Fracture patterns were transverse in 5 (1 males and 4 females); posterior wall in 3 (1 male and 2 females); posterior column and wall in 1 (a female); one transverse and posterior wall (a female); and 1 with associated femoral neck fracture.
Letournel and Judet as well as Matta attributed unfavorable outcomes of anterior and posterior wall as well as posterior column fractures to elderly osteoporotic bone.
The prominent sensory ataxia with only mild motor findings pointed toward a lesion of the posterior columns.
In about half of such cases, neuroimaging reveals a pattern of abnormal T2 signal in the midline and posterior columns of the cervical and thoracic spine that is nearly identical to the radiographic findings in [B.

Full browser ?