Denticulate ligaments 

Denticulate ligaments
The medulla spinalis and its membranes. (Ligamentum denticulatum labeled vertically at bottom left.)
Diagrammatic transverse section of the medulla spinalis and its membranes. (Denticulate ligament not labeled, but region is visible.)
Latin ligamentum denticulatum
Gray's subject #185 750

The pia mater of the spinal cord has 21 pairs of denticulate ligaments which attach it to the arachnoid and dura maters. Named for their tooth like appearance, the denticulate ligaments are traditionally believed to provide stability for the spinal cord against motion within the vertebral column.

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