Internal occipital crest

The Internal Occipital Crest is a prominent anatomical feature found within the human skull. It is a ridge that extends along the internal surface of the occipital bone, from the Foramen magnum to the Internal occipital protuberance.

Internal surface of occipital bone. The internal occipital crest is visible as a horizontal ridge. (Public domain image from Wikimedia Commons)

Anatomy

The Internal Occipital Crest is a bony ridge that divides the floor of the posterior cranial fossa into two halves. It serves as a point of attachment for the falx cerebri, a sickle-shaped fold of the dura mater that descends vertically in the longitudinal fissure between the cerebral hemispheres.

Function

The primary function of the Internal Occipital Crest is to provide support and attachment for the falx cerebri. This helps to stabilize the brain within the skull and prevent excessive movement, particularly during rapid head movements or trauma.

Clinical Significance

Due to its location and role in brain support, damage to the Internal Occipital Crest can potentially lead to neurological issues. However, such instances are relatively rare.

See Also

• Occipital bone
• Foramen magnum
• Falx cerebri