What is Trolard vein?
The superior anastomotic vein, also known as the vein of Trolard, is a superficial cerebral vein grouped with the superior cerebral veins. The vein was eponymously named after the 18th century anatomist Jean Baptiste Paulin Trolard. The vein anastomoses with the middle cerebral vein and the superior sagittal sinus.
Where are bridging veins?
Bridging veins are veins in the subarachnoid space that puncture the dura mater and empty into the dural venous sinuses. A rupture of a bridging vein causes a subdural hematoma.
Where does the vein of Labbe drain?
The inferior anastomotic vein of Labbe is horizontally oriented and positioned on the lateral surface of the temporal lobe. It drains to the transverse sinus.
What are the cortical veins?
The superficial system comprises sagittal sinuses and cortical veins, which drain superficial surfaces of both cerebral hemispheres. The deep system consists of the lateral sinus, straight sinus and sigmoid sinus along with draining deeper cortical veins. Both of these systems mostly drain into internal jugular veins.
What is the major vein of the brain?
Major veins of the brain include the superior and inferior cerebral veins, superficial middle cerebral veins, the great cerebral vein (of Galen), internal cerebral veins, as well as the superior and inferior cerebellar veins. They drain into the dural venous sinuses which are the: Superior sagittal sinus.
What are communicating veins?
Communicating veins are veins that communicate two different points of the venous system. They can communicate the great saphenous vein with the small saphenous vein, (for example the Giacomini vein) or the superficial venous system with the deep one.
What does transverse sinus drain into?
The transverse sinuses are formed by the tentorium cerebelli and drain into the right and left sigmoid sinuses. The transverse sinuses (left and right lateral sinuses), within the human head, are two areas beneath the brain which allow blood to drain from the back of the head.
What is the function of bridging veins?
Bridging veins drain the venous blood from the cerebral cortex into the superior sagittal sinus (SSS) and doing so they bridge the subdural space. Despite their importance in head impact biomechanics, little is known about their properties with respect to histology, morphology and mechanical behaviour.
What do the bridging veins connect?
The bridging vein or veins normally refer to veins which traverse the prepontine cistern to connect veins which run on the anterior aspect of the brainstem to the cavernous sinus or the clival venous plexus. They are easily identified on both contrast MRI and catheter angiography.
What is the vein of Galen formed by?
Vein of Galen malformation (VGAM) results from an aneurysmal malformation with an arteriovenous shunting of blood. The congenital malformation develops during weeks 6-11 of fetal development as a persistent embryonic prosencephalic vein of Markowski; thus, VGAM is actually a misnomer.