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3D model of cerebral veins. In human anatomy, the cerebral veins are blood vessels in the cerebral circulation which drain blood from the cerebrum of the human brain.They are divisible into external (superficial cerebral veins) and internal (internal cerebral veins) groups according to the outer or inner parts of the hemispheres they drain into.
The superior thalamic vein (Latin: vena superioris thalami), initially called by Benno Shlesinger in 1976 the principal thalamic vein (vena principalis thalami) or centro-medial thalamic vein (vena centro-medialis thalami), also called by Russian surgeon Pirogoff internal thalamic vein (vena interioris thalami) is the most prominent vein of the thalamus.
The superior thalamostriate vein or terminal vein commences in the groove between the corpus striatum and thalamus, receives numerous veins from both of these parts, and unites behind the crus of the fornix with the superior choroid vein to form each of the internal cerebral veins.
The paired (right and left) thalamogeniculate veins (Latin: venae thalamo-geniculatae dextra et sinistra) originate each from the posterior part of the thalamus. Their course roughly corresponds to the course of the corresponding thalamogeniculate artery on this side. They drain blood from the pulvinar, medial and lateral geniculate bodies.
Cerebral blood flow (CBF) is the blood supply to the brain in a given period of time. [8] In an adult, CBF is typically 750 millilitres per minute or 15.8 ± 5.7% of the cardiac output . [ 9 ] This equates to an average perfusion of 50 to 54 millilitres of blood per 100 grams of brain tissue per minute.
The superior cerebral veins drain into the superior sagittal sinus individually. The anterior veins run at near right angles to the sinus while the posterior and larger veins are directed at oblique angles, opening into the sinus in a direction opposed to the current (anterior to posterior) of the blood contained within it. [citation needed]
The pathophysiology of cranial venous outflow obstruction involves the disruption of normal venous drainage from the brain. Cerebral veins play a crucial role in draining brain interstitial fluid (ISF), and their significance has been linked in various neurological conditions. [1] It can be caused by extrinsic or intrinsic anomalies. [7]
The falx cerebri is a strong, crescent-shaped sheet of dura mater lying in the sagittal plane between the two cerebral hemispheres. [3] It is one of four dural partitions of the brain along with the falx cerebelli, tentorium cerebelli, and diaphragma sellae; it is formed through invagination of the dura mater into the longitudinal fissure between the cerebral hemispheres.