The straight sinus, also known as tentorial sinus or the sinus rectus, is an area within the skull beneath the brain that receives venous blood. The straight sinus receives blood from the superior cerebellar veins and inferior sagittal sinus and drains into the confluence of sinuses.
where does the confluence of sinuses drain?
Beside this, where does the confluence of sinuses drain?The confluence of sinuses (torcular herophili, or torcula) is the connecting point of the superior sagittal sinus, straight sinus, and occipital sinus. It is found deep to the occipital protuberance of the skull. Blood arriving at this point then proceeds to drain into the left and right transverse sinuses.
where does the great cerebral vein drain?
The superior group of cerebral veins drains most of the medial surface, the superior parts of the lateral surfaces, and the anterior portions of the ventral surfaces of the cerebral hemispheres. The veins empty into the frontal and parietal regions of the superior sagittal sinus.
where does the transverse sinus drain?
The transverse sinus is one of the dural venous sinuses and drains the superior sagittal sinus, the occipital sinus, and the straight sinus, and empties into the sigmoid sinus which in turn reaches the jugular bulb.
Where are the venous sinuses located?
The dural venous sinuses (also called dural sinuses, cerebral sinuses, or cranial sinuses) are venous channels found between the endosteal and meningeal layers of dura mater in the brain.
Where does the occipital sinus drain?
The occipital sinus is attached to the posterior margin of the falx cerebelli and receives tributaries from the margins of the foramen magnum. It may anastomosis with the sigmoid sinuses and posterior internal vertebral plexus that drain into the torcular herophili. You may also read,
What drains into the sigmoid sinus?
The sigmoid sinus receives blood from the transverse sinuses, which track the posterior wall of the cranial cavity, travels inferiorly along the parietal bone, temporal bone and occipital bone, and converges with the inferior petrosal sinuses to form the internal jugular vein. Check the answer of
Where is the inferior sagittal sinus?
The inferior sagittal sinus courses along the inferior border of the falx cerebri, superior to the corpus callosum. It receives blood from the deep and medial aspects of the cerebral hemispheres and drains into the straight sinus.
Where does internal jugular vein drain?
During its descent down the neck, the internal jugular vein receives blood from the facial, lingual, occipital, superior and middle thyroid veins. These veins drain blood from the anterior face, trachea, thyroid, oesophagus, larynx, and muscles of the neck. Read:
Is the superior sagittal sinus a vein?
The superior sagittal sinus is a midline vein without valves or tunica muscularis that courses along the falx cerebri, draining many of the cerebral structures surrounding it.
What are venous sinuses?
Venous sinus, in human anatomy, any of the channels of a branching complex sinus network that lies between layers of the dura mater, the outermost covering of the brain, and functions to collect oxygen-depleted blood. Unlike veins, these sinuses possess no muscular coat.
How many cavernous sinuses are there?
The two cavernous sinuses are connected to each other by anterior and posterior cavernous sinuses lying in front and behind the pituitary.
What is arachnoid granulation?
Arachnoid granulations, also known as Pacchionian granulations, are projections of the arachnoid membrane (villi) into the dural sinuses that allow CSF to pass from the subarachnoid space into the venous system.
What does hypoplastic transverse sinus mean?
Abstract Background: Transverse sinuses (TS) are frequently asymmetric. Hypoplasia was defined as a transverse sinus diameter less than 50% of the cross-sectional diameter of the lumen of the distal superior sagittal sinus.
What is hypoplastic left transverse sinus?
In the absence of this, flow gap in the venous sinus, hypoplasia and aplasia of the transverse sinus may be mistaken for venous sinus thrombosis. Hypoplastic left transverse sinus is the most common anatomical variation in the present study. Hypoplastic left transverse sinus is more common in male compared to female.
