Groove for the sigmoid sinus

Study entry

Description

A wide, S-shaped groove in the posterior cranial fossa.

Relations

It marks the sigmoid sinus, which leaves through the jugular foramen as the internal jugular vein.

Source: cap. 8, «Cráneo: fosas craneales» y tabla 8-2

Other structures in this region

• Squamous part of the frontal bone
• Orbital part of the frontal bone
• Glabella
• Superciliary arch
• Supraorbital margin
• Supraorbital foramen (notch)
• Frontal eminence
• Frontal crest