Cerebral venous system
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The cerebral venous system, somewhat unlike the majority of the rest of the body, does not even remotely follow the cerebral arterial system.
The cortical veins lie superficially, unlike cortical arteries, and are adherent to the deep surface of the arachnoid mater so that they keep the sulci open2. Cortical veins then drain to the nearest dural venous sinus, such as the superior sagittal sinus (which drains the superolateral surface of the hemisphere) and the straight sinus, to the torcula Herophili which lies inferiorly (the confluence of sinuses), then to the lateraltransverse sinuses, and sigmoid sinussinuses and internal jugular veins2-3.
Drainage of the inferior and medial surfaces drainare done through the straight sinus to the great cerebral vein (of Galen) to the internal cerebral vein and choroid plexus vein, thalmostriate vein and veins of septum pellucidum2. The great cerebral vein (of Galen) also gives off two basal veins (of Rosenthal) and with the inferior sagittal sinus, joins the straight sinus2.
Cerebral veins have thin walls with no muscular tissue and possess no valves. They emerge from the brain and lie in the subarachnoid space, coursing over the surface of the brain, agregatingaggregating into larger channels until they pierce the arachnoid mater and the meningeal layer of the dura mater and drain into the dural venous sinuses.
The whole system may be divided into a number of sections:
-<p>The <strong>cerebral venous system</strong>, somewhat unlike the majority of the rest of the body, does not even remotely follow the <a href="/articles/cerebral-arterial-system">cerebral arterial system</a>.</p><p>The cortical veins lie superficially, unlike cortical arteries, and are adherent to the deep surface of the arachnoid mater so that they keep the sulci open<sup>2</sup>. Cortical veins then drain to the nearest venous sinus, such as the superior sagittal sinus (which drains the superolateral surface of the hemisphere) and the straight sinus, to the <a href="articles/confluence-of-sinuses">torcular Herophili</a> which lies inferiorly (the confluence of sinuses), then to the lateral sinuses, and sigmoid sinus and internal jugular veins<sup>2-3</sup>.</p><p>Drainage of the inferior and medial surfaces drain through the straight sinus to the great cerebral vein (of Galen) to the internal cerebral vein and choroid plexus vein, thalmostriate vein and veins of septum pellucidum<sup>2</sup>. The great cerebral vein (of Galen) also gives off two basal veins (of Rosenthal) and with the inferior sagittal sinus, joins the straight sinus<sup>2</sup>.</p><p>Cerebral veins have thin walls with no muscular tissue and possess no valves. They emerge from the brain and lie in the subarachnoid space, coursing over the surface of the brain, agregating into larger channels until they pierce the <a href="/articles/arachnoid-mater">arachnoid mater</a> and the meningeal layer of the <a href="/articles/dura-mater">dura mater</a> and drain into the <a href="/articles/dural-venous-sinuses">dural venous sinuses</a>.</p><p>The whole system may be divided into a number of sections:</p><ul>- +<p>The <strong>cerebral venous system</strong>, somewhat unlike the majority of the rest of the body, does not even remotely follow the <a href="/articles/cerebral-arterial-system">cerebral arterial system</a>.</p><p>The cortical veins lie superficially, unlike cortical arteries, and are adherent to the deep surface of the <a title="Arachnoid mater" href="/articles/arachnoid-mater">arachnoid mater</a> so that they keep the sulci open <sup>2</sup>. Cortical veins then drain to the nearest <a title="Dural venous sinuses" href="/articles/dural-venous-sinuses">dural venous sinus</a>, such as the <a title="Superior sagittal sinus" href="/articles/superior-sagittal-sinus">superior sagittal sinus</a> (which drains the superolateral surface of the hemisphere) and the <a title="Straight sinus" href="/articles/straight-sinus">straight sinus</a>, to the <a title="Torcula herophili" href="/articles/confluence-of-sinuses">torcula Herophili</a> which lies inferiorly (the confluence of sinuses), then to the <a title="Transverse sinus" href="/articles/transverse-sinus">transverse sinuses</a>, and <a title="Sigmoid sinus" href="/articles/sigmoid-sinus">sigmoid sinuses</a> and <a title="Internal jugular veins" href="/articles/internal-jugular-vein">internal jugular veins</a> <sup>2-3</sup>.</p><p>Drainage of the inferior and medial surfaces are done through the straight sinus to the great cerebral vein (of Galen) to the internal cerebral vein and choroid plexus vein, thalmostriate vein and veins of septum pellucidum <sup>2</sup>. The great cerebral vein (of Galen) also gives off two basal veins (of Rosenthal) and with the inferior sagittal sinus, joins the straight sinus <sup>2</sup>.</p><p>Cerebral veins have thin walls with no muscular tissue and possess no valves. They emerge from the brain and lie in the <a title="Subarachnoid space" href="/articles/subarachnoid-space">subarachnoid space</a>, coursing over the surface of the brain, aggregating into larger channels until they pierce the arachnoid mater and the meningeal layer of the <a href="/articles/dura-mater">dura mater</a> and drain into the dural venous sinuses.</p><p>The whole system may be divided into a number of sections:</p><ul>
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