Cranial Venous Channels

• Lies in the midline along the convex border of the falx cerebri.
• Begins at the crista galli and receives the cerebral, diploic meningeal, and parietal emissary veins.

• Lies in the free edge of the falx cerebri and is joined by the great cerebral vein of Galen to form the straight sinus.

• Runs along the line of attachment of the falx cerebri to the tentorium cerebelli.
• Is formed by union of the inferior sagittal sinus and the great vein of Galen.

• Runs laterally from the confluence of sinuses along the edge of the tentorium cerebelli.

• Is a continuation of the transverse sinus; arches downward and medially in an S-shaped groove on the mastoid part of the temporal bone.
• Enters the superior bulb of the internal jugular vein.

• Are located on each side of the sella turcica and the body of the sphenoid bone and lie between the meningeal and periosteal layers of the dura mater.
• The internal carotid artery and the abducens nerve pass through these sinuses. In addition, the oculomotor, trochlear, ophthalmic, and maxillary nerves pass forward in the lateral wall of these sinuses.
• Communicate with the pterygoid venous plexus by emissary veins and receive the superior ophthalmic vein.

• Lies in the margin of the tentorium cerebelli, running from the posterior end of the cavernous sinus
• to the transverse sinus.

• Drains the cavernous sinus into the bulb of the internal jugular vein.
• Runs in a groove between the petrous part of the temporal bone and the basilar part of the occipital bone.

• Lies along the posterior edge of the lesser wing of the sphenoid bone and drains into the cavernous sinus.

• Lies in the falx cerebelli and drains into the confluence of sinuses.

• Consists of interconnecting venous channels on the basilar part of the occipital bone and connects the two inferior petrosal sinuses.
• Communicates with the internal vertebral venous plexus.

• Lie in the skull and drain the diploic space and are connected with the cranial dura sinuses by the emissary veins.

• Are small veins connecting the venous sinuses of the dura with the diploic veins and the veins of the scalp.