The sagittal sulcus is a midline groove that runs across the internal surfaces of part of the
squamous part of the
frontal bone
The frontal bone is a bone in the human skull. The bone consists of two portions.'' Gray's Anatomy'' (1918) These are the vertically oriented squamous part, and the horizontally oriented orbital part, making up the bony part of the forehead, pa ...
, the
parietal bones,
and part of the
occipital bone
The occipital bone () is a cranial dermal bone and the main bone of the occiput (back and lower part of the skull). It is trapezoidal in shape and curved on itself like a shallow dish. The occipital bone overlies the occipital lobes of the c ...
s. The sagittal sulcus accommodates the
superior sagittal sinus
The superior sagittal sinus (also known as the superior longitudinal sinus), within the human head, is an unpaired area along the attached margin of the falx cerebri. It allows blood to drain from the lateral aspects of anterior cerebral hemispher ...
. The
falx cerebri
The falx cerebri (also known as the cerebral falx) is a large, crescent-shaped fold of dura mater that descends vertically into the longitudinal fissure between the cerebral hemispheres of the human brain,Saladin K. "Anatomy & Physiology: The Un ...
attaches to the edge of the sagittal sulcus
on either side.
On the inferior portion of the squamous part of the frontal bone, the edges of the sagittal sinus converge to form a single midline ridge, the
frontal crest
The frontal crest is a ridge on the internal surface of the squamous part of the frontal bone formed by the inferior convergence of the two edges of the sagittal sulcus. The frontal crest gives attachment to the falx cerebri
The falx cerebri ( ...
(which also gives attachment to the falx cerebri).
References
Bones of the head and neck
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