Anterior horn (spinal cord)
|Anterior horn (spinal cord)|
|Latin||cornu anterius medullae spinalis|
|Gray's||subject #185 753|
It is these cells that are affected in the so-called "Anterior Horn Diseases", namely Amyotrophic Lateral Sclerosis, Spinal muscular atrophy, Charcot-Marie-Tooth disease and Progressive muscular atrophy. These motorneurons are also affected in Spinal and Bulbar Muscular Atrophy (Kennedy disease).
The Anterior Column (anterior cornu, anterior horn), directed forward, is broad and of a rounded or quadrangular shape.
Its posterior part is termed the base, and its anterior part the head, but these are not differentiated from each other by any well-defined constriction.
It is separated from the surface of the medulla spinalis by a layer of white substance which is traversed by the bundles of the anterior nerve roots.
In the thoracic region, the postero-lateral part of the anterior column projects lateralward as a triangular field, which is named the lateral column (columna lateralis; lateral cornu).
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.