anterior horn


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anterior horn

[an¦tir·ē·ər ′hȯrn]
(neuroscience)
The ventral column of gray matter in the spinal cord containing the cell bodies of motor (efferent) neurons.
References in periodicals archive ?
AFP can include clinical syndromes caused by acute dysfunction of the anterior horn cells (e.
Table 1 Overall Mean (Standard Deviation) of the Contact Area for Each Loading Condition, Meniscus State, and Meniscal Region Across the Arc of Motion Region Loading Condition MCA Intact Knee MCA Superior (cm(2)) HCT Flap Removed (cm(2)) Anterior Horn Comp 0.
The asterisk indicates the anterior horn of the lateral meniscus, which is located in the normal position.
The spread of active inflammation from the dorsal root ganglion to the anterior horn cells and anterior nerve roots and involvement of the motor nerve are postulated to be involved.
Males with pronotum variable but never with anterior horn or swelling; females without clypealfrontal carina, and with pronotum evenly convex .
The distances between anterior and posterior horns were determined using the internal face of Vernier Calliper which was placed between the apex of the anterior horn and the apex of the posterior horn (Figure 2).
Abnormal signal and enhancement may demonstrate a double-dot ("owl's eye") pattern in the region of the anterior horns and H-shape pattern involving the central grey matter or a more diffuse pattern involving both grey and white matter (Bradley at al, 2008).
Normal measurements of the posterior horn of the medial meniscus may vary, but the posterior horn is usually much larger than the anterior horn (the posterior horn usually measures 12 mm to 16 mm in the sagittal plane in an adult), and approximately twice the size of the anterior horn on sagittal magnetic resonance (MR) images.
Another experimental study suggests that kyphotic angle leads to flattening of the cord over the deformity thereby causing demyelination of anterior funiculus, neuronal loss and atrophy of anterior horn and decreased vascularity at the ventral side of compressed spinal cord [12].
In 1961, Van Reeth and colleagues described the presence of intracellular inclusion bodies in the anterior horn cells of a patient with Pick's dementia and atypical amyotrophic lateral sclerosis (ALS) [1].
After initial lymphocytic meningitis, it affects the motor cells in the anterior horn of the spinal cord.
We postulate that it could have induced spinal cord irritation, resulting in spontaneous, repetitive discharges of the anterior horn cell groups.

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