Z8600021: /* Posterior Median Sulcus */

2012-10-17T02:54:29Z

Posterior Median Sulcus

← Older revision		Revision as of 13:54, 17 October 2012
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	{{Gray Anatomy}}		{{Gray Anatomy}}

			[[Category:Spinal Cord]]

Z8600021: ==Fig 664 Transverse section of the medulla spinalis in the mid-thoracic region== Fissures and Sulci - An anterior median fissure and a posterior median sulcus incompletely divide the medulla spinalis into two symmetrical parts, which are joined across t

2012-10-17T02:51:18Z

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==Fig 664 Transverse section of the medulla spinalis in the mid-thoracic region==

Fissures and Sulci - An anterior median fissure and a posterior median sulcus incompletely divide the medulla spinalis into two symmetrical parts, which are joined across the middle line by a commissural band of nervous matter.

===Anterior Median Fissure===

(fissura mediana anterior) has an average depth of about 3 mm., but this is increased in the lower part of the medulla spinalis. It contains a double fold of pia mater, and its floor is formed by a transverse band of white substance, the anterior white commissure, which is perforated by bloodvessels on their way to or from the central part of the medulla spinalis.

===Posterior Median Sulcus===

(sulcus medianus posterior) is very shallow; from it a septum of neuroglia reaches rather more than half-way into the substance of the medulla spinalis; this septum varies in depth from 4 to 6 mm., but diminishes considerably in the lower part of the medulla spinalis.

{{Gray Anatomy}}

File:Gray0664.jpg - Revision history

Z8600021: /* Posterior Median Sulcus */

Z8600021: ==Fig 664 Transverse section of the medulla spinalis in the mid-thoracic region== Fissures and Sulci - An anterior median fissure and a posterior median sulcus incompletely divide the medulla spinalis into two symmetrical parts, which are joined across t