ventral horn


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Related to ventral horn: ventral column, Lateral horn

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

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.

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 ?
Not surprisingly, the change of GFAP protein level in the spinal ventral horn revealed by western blotting also appeared similar patterns as above (Figures 1(e) and 1(f)).
To assay the expression level of neurotrophins in the spinal ventral horn, double immunostaining with antibodies of neurotrophins and GFAP was performed and the results revealed that neurotrophin immunoreactivities were found to predominantly colocalize with GFAP-positive astrocytes (including soma and processes) (Figures 3(a)-3(c)).
In the ventral horn from ps-[SOD1.sup.G93A] rats, RAGE maintains a neuronal expression but also appears in S100B-positive cells, while in the WM RAGE signal almost completely colocalizes with S100B (Figure 3, ps-[SOD1.sup.G93A]--GM and WM).
As for lumbar spinal tissues, in the ventral horn of the cervical spinal cord from WT animals, RAGE stains motoneuronal cells, without overlapping with GFAP (Figure 4, WT--GM).
(g) Quantification of MAP2-positive cells in the ventral horn of injured spinal cord.
The MAP2-positive cells in five 0.25 mm x 0.25 mm fields in the ventral horns of the spinal cord were counted.
Note grafted tissue at Th13/L1 and serotonin-positive fibers (5-HT, red) located closely to ventral horn motoneurons (NeuN; purple) at L4/L5.
Moreover, while we identified a slightly increased number of astrocytes in ventral horns at the grafting level compared to control, the same numbers of astrocytes were observed at L4/L5 in both [SCI.sub.4m] and [SCI.sub.TR] rats.
The number of motor neurons with intensely stained Nissl substance in the cytoplasm and well-delineated nucleus in the ninth lamina of the right and left ventral horns for each section was counted under a light microscope at the magnification of 200x [37].
The present results have demonstrated that, following a complete transection of the lower thoracic spinal cord segment in the rat, TANES or EA treatment can increase the expression of NT-3 and ChAT localized specifically in the lumbar motor neurons in the ventral horns. More importantly, either one of the treatments can prevent the secondary injury to the spinal motor neurons.
The effects of photothrombotic ischemic injury and treatment with PEDF on the neuroplasticity in the ventral horn of the lumbar spinal cord were analyzed by means of MAP-2 detection.
The target sites included cerebellar roof nuclei in the Purkinje molecular layer of the cerebellum, caudal brainstem nuclei (red nuclei and vestibular complex), and all levels of spinal cord examined (cervical, thoracic, and lumbar segments) located mainly in the ventral horns and dorsal root ganglia (Figure 1, panels A, B).