anterior horn


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an·te·ri·or horn

[TA]
1. the frontal or anterior division of the lateral ventricle of the brain, extending forward from the Monro interventricular foramen;
See also: anterior column, gray columns.
2. the anterior horn or anterior (ventral) gray column of the spinal cord as appearing in cross section. The anterior horn is composed of the spinal laminae VIII and IX [TA] of Rexed with portions of VII also extending into its geographical boundaries in lumbosacral and cervical levels. The nuclei of the anterior horn are the anterolateral nucleus [TA] or ventrolateral nucleus [TAalt] (nucleus anterolateralis [TA]), anterior nucleus [TA] (nucleus anterior [TA]), anteromedial nucleus [TA] or ventromedial nucleus [TAalt] (nucleus anteromedialis [TA]), posterolateral nucleus [TA] or dorsolateral nucleus [TAalt] (nucleus posterolateralis [TA]), retroposterior lateral nucleus [TA] or retrodorsal lateral nucleus [TAalt] (nucleus retroposterolateralis [TA]), posteromedial nucleus [TA] or dorsomedial nucleus [TAalt] (nucleus posteromedialis [TA]), central nucleus [TA] (nucleus centralis [TA]), and the accessory nucleus and phrenic nucleus (both found in cervical levels only).
See also: anterior column, gray columns.
Synonym(s): cornu anterius [TA], ventral horn

anterior horn

Etymology: L, ante + prior, foremost, cornu, horn, spina, spine; Gk, chorde, string
one of the hornlike projections of gray matter into the white matter of the spinal cord. The anterior horn contains efferent fibers innervating skeletal muscle tissue. Also called anterior column, ventral column, ventral horn.

an·te·ri·or horn

(an-tēr'ē-ŏr hōrn) [TA]
1. The anterior or frontal division of the lateral ventricle of the brain, extending forward from Monro interventricular foramen.
See: lateral ventricle
2. The anterior or ventral gray column of the spinal cord as appearing in cross-section.
See also: gray columns
Synonym(s): cornu anterius [TA] , precornu, ventral horn.

an·te·ri·or horn

(an-tēr'ē-ŏr hōrn) [TA]
1. [TA] Frontal or anterior division of the lateral ventricle of the brain, extending forward from the interventricular (Monro) foramen.
2. Anterior horn or anterior (ventral) gray column of the spinal cord as appearing in cross-section.
References in periodicals archive ?
Kale, et al studied fetal menisci and reported that the mean width of the midpoint of the anterior horn, posterior horn and the lateral side of the lateral menisci were recorded as 0.
Gadolinium enhancement demonstrates a double- dot (owl's eye) pattern in the region of the anterior horns.
The anomalous insertion runs from the anterior horn of the medial meniscus to either the ACL or the intercondylar notch, most commonly to the mid ACL, and less commonly to the base of the ACL or the intercondylar notch.
2], who examined serial sections of anterior horn cells using electron microscopy.
In terms of the lower motor neurons, ALS affects the anterior horn cells of the spinal cord, leading to limb weakness.
Spinal muscular atrophy (SMA) is a genetic, motor neuron disease characterized by wasting of the skeletal muscles caused by progressive degeneration of the anterior horn cells of the spinal cord.
College of Medicine, Philadephia, PA) has drawn on a long career in neurology to write this authoritative text describing the differential diagnosis to be observed in 16 separate conditions, including vascular disease, epilepsy, anterior horn cell disease, spinal cord disease, cranial nerves, and dementia.
Imaging of patients has suggested that the virus causes lesions in the spinal anterior horn cells, much like polio virus does.
The virus can attack the anterior horn cells, causing acute flaccid paralysis resulting in a poliomyelitis-like syndrome.
5 cm posterior to the anterior border of the articular surface, just medial to the attachment of the anterior horn of the lateral meniscus.
1991) add that the disease has a specific affinity for cells of the anterior horn (i.
Inflammatory cells were clustered around dying anterior horn cells, which is an indication of neuronophagia.

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