a shallow vertical groove dividing the spinal cord throughout its whole length in the midline posteriorly.
posterior median sulcus
The posterior median sulcus is a groove or indentation that runs along the back (posterior) of the spinal cord. This sulcus divides the spinal cord into symmetrical halves and is characterized by a deep groove that runs along the center of the posterior surface of the spinal cord.
The primary function of the posterior median sulcus is to act as a landmark for the anatomical segmentation of the spinal cord. This helps to identify the location of specific spinal cord segments and differentiate between the different levels of the spinal cord. The sulcus also plays an important role in protecting the spinal cord from injury, as it gives the spinal cord additional structural support.
Overall, the posterior median sulcus is an essential feature of the spinal cord anatomy that serves several important functions related to anatomical identification and structural support.
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