In the spinal cord, the gray matter is located in the center, on all sides surrounded by white matter
The gray matter of the spinal cord actually consists of a large number of tightly packed nuclei. These are symmetrically arranged on both sides of the midline and give the combined cross-sectional image of an H or butterfly, with a pair of wings directed backwards and one forward.
The posterior wings, or H-et's posterior bars, form the posterior horns of the spinal cord (cornu posterius) and the anterior horns of the spinal cord (cornu anterius). The transverse part of the H-et, the portion of grey matter that joins the hind and front horns, constitutes the intermediate grey matter of the spinal cord (substantia grisea intermedia).
Thus, the gray matter of the spinal cord has the 3-dimensional shape of a beam with H-shaped cross-section. From a 3-dimensional point of view, the hind horns form the "posterior pillars of the spinal cord" (columna posterior) on hay. and one on the left. page. The front horns form the "anterior pillar of the spinal cord" (columna anterior) on hay. and one on the left. page.
At segment levels T1 to L2-3 and S2 to S4, the intermediate grey matter penetrates the lateral strand, forming distinct lateral horns (cornu laterale). At these levels, the lateral horns contain preganglionic nerve cell bodies. At the other segmental levels, the lateral horns are not very prominent.