Anatomy Of The Cavernous Sinus

Cavernous sinuses are paired dural venous sinuses located in the middle cranial fossa on the side of the body of sphenoid bone. It spans from the apex of the orbit to the apex of the petrous temporal bone.

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Each cavernous sinus is flanked laterally by the temporal bone of the skull and inferiorly by the sphenoid bone with close proximity to the sphenoid sinuses.

Anatomy of the cavernous sinus. ANATOMY OF CAVERNOUS SINUS Earliest description of CS by Ridley in 1695. Winslow in 1732 gave name CS due to presence of fibrous trabeculae. The cavernous sinus accommodates the internal carotid artery and transmits several cranial nerves to the superior orbital fissure and to the foramen rotundum.

The cavernous sinuses are dural venous sinuses that communicate with one another. 2 cm long and 1 cm wide. The cavernous sinuses are 1 cm wide cavities that extend a distance of 2 cm from the most posterior aspect of the orbit to the petrous part of the temporal bone.

Each cavernous sinus has a close anatomical relationship with several key structures in the head and is arguably the most clinically important venous sinus. Medially the cavernous sinus is related to the pituitary gland and the sphenoid sinus. They extend from the medial end of superior orbital fissure anteriorly to the apex of petrous temporal bone posteriorly.

In addition the ophthalmic and dorsal meningeal arteries arose from the carotid artery within the cavernous sinus in 8 and 6 respectively. The first and second divisions of the fifth cranial nerve were embedded in the deep dural layer of the cavernous sinus and were supplied by the two main branches of the intracavernous carotid artery. The three main branches of the meningohypophyseal trunk were the tentorial artery present in 100 the dorsal meningeal 90 and the inferior hypophyseal 80.

Cavernous venous sinuses are paired dural venous sinuses located in the middle cranial fossa on either side of the body of sphenoid bone. The direct surgical approach to the cavernous sinus either for vascular malformations or invasive tumors treatment is now largely accepted. In this case the internal carotid artery moves blood from the brain and face back to the heart to be oxygenated.

The name cavernous is derived from the trabeculated or spongy appearance of the interior of sinus cavern means large dark enclosed space. The cavernous sinus Figs 759761 one on each side situated on the body of the sphenoid bone extends from the superior orbital fissure to the apex of the petrous temporal bone. Each cavernous sinus contains the internal carotid artery and sympathetic plexus oculomotor nerve trochlear nerve abducens nerve and the V1 to V2 branches of the trigeminal nerve.

They are bilaterally paired collections of venous plexuses that sit on either side of the sphenoid bone. Taptas in 1982 argued in favour of CS an irregular network of veins- a part of ED venous network at skull base. The cavernous sinus is located in the middle cranial fossa on either side of the sella turcica or pituitary fossa and the body of the sphenoid at the base of the skull.

It is a collection of extradural venous compartments often functionally separate which altogether constitute the venous space we have come to regard as a distinct anatomical structure. The carotid siphon of the internal carotid artery and cranial nerves III IV V branches V 1 and V 2 and VI all pass through this blood filled space. Lateral and Third Ventricles.

It is divided by septa into small caves from which it gets its name. The need for detailed vascular anatomy including venous. Controversy still persists regarding whether CS is a venous channel or a true venous plexus.

Usually the paired cavernous sinuses are situated superolateral to the sphenoid or the posterior ethmoid sinuses and posterior to the optic chiasma see image. The cavernous sinus is a blood space containing endothelium trabeculae and ligaments. Cavernous Sinus and Carotid Collar.

The anatomy of the cavernous sinus is unique because it is the only place in the human body where an artery moves entirely through a venous structure. The cavernous sinus is located on either side of the pituitary fossa and body of the sphenoid bone between the endosteal and meningeal layers of the dura. It is a network of veins that sit in a cavity approximately 1 x 2 cm in size in an adult.

The cavernous sinus is a paired dural venous sinus located within the cranial cavity. The cavernous sinus is at least from the angiographic perspective a metaphysical entity. Laterally it is related to the temporal lobe of the brain.

These are the oculomotor trochlear abducens nerves as well as the ophthalmic and maxillary divisions of the trigeminal nerve. However good venous injection techniques not supported this. Insula and Sylvian Fissure.

The cavernous sinus is one of the dural venous sinuses of the head. As such infections of the face particularly those involving the danger triangle orbits nasal sinuses and superior part of the face can cause a cavernous sinus thrombosis. The veins of the face drain blood into the cavernous sinus via the superior ophthalmic vein.

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