Sulcus of spinal cord

The sulcus of the spinal cord refers to the grooves or furrows found on the surface of the spinal cord. These sulci are important anatomical features that help to divide the spinal cord into different regions and facilitate the organization of nerve fibers.

Anatomy

The spinal cord has several notable sulci, including:

• Anterior median fissure: A deep groove along the anterior (ventral) midline of the spinal cord. It partially divides the spinal cord into right and left halves.
• Posterior median sulcus: A shallow groove along the posterior (dorsal) midline of the spinal cord. It also helps to divide the spinal cord into right and left halves.
• Anterolateral sulcus: Located on each side of the anterior median fissure, this sulcus marks the site where the anterior (ventral) rootlets of the spinal nerves emerge.
• Posterolateral sulcus: Found on each side of the posterior median sulcus, this sulcus is where the posterior (dorsal) rootlets of the spinal nerves enter the spinal cord.

Function

The sulci of the spinal cord play a crucial role in the organization and function of the central nervous system. They help to delineate the boundaries of the white matter and gray matter within the spinal cord and provide pathways for the spinal nerves.

Clinical Significance

Damage or abnormalities in the sulci of the spinal cord can lead to various neurological conditions. For example, compression of the spinal cord at the level of the anterior median fissure can result in motor deficits, while damage to the posterior median sulcus can affect sensory functions.

Related Pages

• Spinal cord
• Central nervous system
• Nerve fibers
• White matter
• Gray matter
• Spinal nerves

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