Where does the superior petrosal sinus drain into?
The superior petrosal sinus is one of the dural venous sinuses and drains the cavernous sinus. It courses posterolaterally to drain into the sigmoid sinus at the continuation of the transverse sinus. It runs along the superior aspect of the petrous temporal bone.
Where does superior and inferior petrosal sinus drain?
Cavernous sinus
The function of the superior petrosal sinus is to drain the venous blood from the brainstem, temporal lobe of cerebrum, cerebellum, middle and inner ear into the transverse sinus….Superior petrosal sinus.
| Drains from | Cavernous sinus |
|---|---|
| Tributaries | Superior petrosal, cerebellar, inferior cerebral, tympanic, labyrinthine veins |
What does the inferior petrosal sinus connect?
The inferior petrosal sinus is a paired cranial venous channel that drains the cavernous sinus, midbrain, cerebellum and inner ear. This dural venous sinus emerges from the cavernous sinus within the middle cranial fossa and drains into the internal jugular vein.
What does the petrosal sinus drain into?
The inferior petrosal sinuses are two small sinuses situated on the inferior border of the petrous part of the temporal bone, one on each side. Each inferior petrosal sinus drains the cavernous sinus into the internal jugular vein.
What is superior petrosal sinus?
The superior petrosal sinus is a part of the dural venous sinus system that drains venous blood and cerebrospinal fluid circulating within the cranial cavity. The dural venous sinus system empties into the internal jugular vein and further flows into the cardiovascular circulation via the superior vena cava.
Where does the sigmoid sinus drain into?
The sigmoid sinus courses along the floor of the posterior cranial fossa to enter the jugular foramen. It drains into the jugular bulb via which it connects with the internal jugular vein.
Where is inferior petrosal sinus located?
The inferior petrosal sinus (sinus petrosus inferior) is situated in the inferior petrosal sulcus formed by the junction of the petrous part of the temporal with the basilar part of the occipital.
What is the meaning of Petrosal?
: of, relating to, or situated in the region of the petrous portion of the temporal bone or capsule of the inner ear.
What does the superior sagittal sinus drain into?
The superior sagittal sinus drains into the transverse sinus. The transverse sinuses also receive venous drainage from small veins from both the middle ear and the mastoid cells. The transverse sinus becomes the sigmoid sinus before draining into the internal jugular vein.
Which sinus drains the superior surface of the cerebellum?
The inferior cerebellar veins are of large size and end in the transverse, superior petrosal, and occipital sinuses….
| Cerebellar veins | |
|---|---|
| Drains from | cerebellum |
| Drains to | dural venous sinuses |
| Artery | AICA, PICA |
| Identifiers |
What is the superior sagittal sinus filled with?
Cerebrospinal fluid drains through arachnoid granulations into the superior sagittal sinus and is returned to venous circulation.
Where is the superior petrosal sinus located in the brain?
The sinuses at the base of the skull. (Superior petrosal sinus visible at center left.) The superior petrosal sinus is one of the dural venous sinuses located beneath the brain. It receives blood from the cavernous sinus and passes backward and laterally to drain into the transverse sinus .
Where is the sinus located in the human body?
The sinus runs in the attached margin of the tentorium cerebelli, in a groove in the petrous part of the temporal bone formed by the sinus itself – the superior petrosal sulcus. The sinus receives some cerebellar veins, inferior cerebral veins, and veins from the tympanic cavity .
How is the middle cerebral vein connected to the sinus?
The middle cerebral vein is connected to the superior sagittal sinus through the great anastomotic vein of Trolard and the transverse sinus through the posterior anastomotic vein of Labbe.