Deep Cerebral Veins
The deep veins of the cerebrum ultimately drain into the great cerebral vein. This vein travels posteriorly and drains into the straight sinus.
Two Major Tributaries of the Great Cerebral Vein
-
Internal Cerebral Veins
- Closely associated with the thalamus and the choroidal plexus of the lateral and third ventricles. For a refresher on ventricular anatomy, see Brain Ventricles & CSF Flow: Anatomy of the Ventricular System Explained.
- Travel posteriorly to unite and form the great cerebral vein.
-
Basal Veins
- Extend posteriorly and are closely associated with midbrain structures. The midbrain is a critical component of the brainstem; learn more about its roles in Brainstem Anatomy & Functions: Vital Control Centers Explained.
- Drain into the great cerebral vein.
Superficial Venous Drainage
The superficial veins on the lateral aspect of the cerebrum are grouped into the superior cerebral veins and the superficial middle cerebral vein.
Superior Cerebral Veins
- Extend along the lateral surface superiorly.
- Drain into the superior sagittal sinus.
Superficial Middle Cerebral Vein
- Travels within the lateral (Sylvian) fissure.
- Drains into three different sinuses:
- Superior sagittal sinus (via a superior anastomotic vein)
- Transverse sinus (via an inferior anastomotic vein)
- Cavernous sinus (via its anterior course extending internally)
Summary of Venous Drainage
| Vein Type | Key Veins | Destination | | :--- | :--- | :--- | | Deep | Internal Cerebral & Basal Veins | Great Cerebral Vein → Straight Sinus | | Superficial | Superior Cerebral Veins | Superior Sagittal Sinus | | Superficial | Superficial Middle Cerebral Vein | Superior Sagittal Sinus, Transverse Sinus, Cavernous Sinus |
The tutorial concludes by inviting viewer feedback on the video and suggestions for future topics.
In this video, we will cover the superficial and deep veins of the cerebrum,
both of which drain into the dural venous sinuses. First, we will examine the deep veins.
So, the deep veins of the cerebrum drain into the great cerebral vein. This vein travels posteriorly
and in turn drains into the straight sinus. So, the great cerebral vein has two
major sets of tributaries. The first are the internal cerebral veins.
These veins are closely associated with the thalamus, which you can see here highlighted in green,
and they're also associated with the choroidal plexus of the lateral and third ventricles.
These veins travel posteriorly, where they unite to form the great cerebral vein.
The second set of tributaries are the basal veins. These veins also extend posteriorly,
and they're closely associated with midbrain structures, and they drain into the great cerebral vein,
which in turn drains into the straight sinus. So, these are the deep cerebral veins.
Next, we're going to talk about the superficial venous drainage, and to do so, we're going to have to rotate the
model around laterally. So, we can see here the lateral aspect of the cerebrum on the left-hand side,
and we can see that there are several veins. These can be grouped into a group of
superior cerebral veins and a superficial
middle cerebral vein. So, let us first look at these superior
veins. These veins extend along the lateral surface superiorly,
and they drain into the superior sagittal sinus. We can see the superior sagittal sinus
within the falx cerebri. The superficial middle cerebral vein travels within the lateral or Sylvian
fissure and drains into three different sinuses. So, via a superior anastomotic vein, it
drains into the superior sagittal sinus. Via an inferior anastomotic vein, it travels inferiorly
and drains into the transverse sinus. If again we go back to the superficial middle cerebral vein and we
follow its course anteriorly, we will see that it actually extends internally
and drains into the cavernous sinus. So, the middle superficial cerebral vein drains into the cavernous sinus, it
drains into the superior sagittal sinus, and it also drains into the transverse sinus.
So, that's the end of this tutorial. We'd love to hear your feedback on what you thought of this video and what
topics you'd like us to cover in the future. You can do this by leaving a comment or dropping us an email.
The great cerebral vein (of Galen) acts as the central collecting channel for deep cerebral veins. It travels posteriorly to drain deoxygenated blood from internal cerebral and basal veins directly into the straight sinus, which then routes blood toward systemic circulation.
Internal cerebral veins are closely associated with the thalamus and choroidal plexus of the lateral and third ventricles, collecting blood from deep subcortical structures. In contrast, basal veins run posteriorly near midbrain structures, draining blood from the basal forebrain and brainstem regions before joining the great cerebral vein.
The superior cerebral veins drain into the superior sagittal sinus, which runs along the top of the brain. This is clinically important because thrombosis of the superior sagittal sinus can impair venous outflow from the brain's convexity, leading to intracranial hypertension and potential hemorrhagic infarction.
The superficial middle cerebral vein drains into the superior sagittal sinus via a superior anastomotic vein, the transverse sinus via an inferior anastomotic vein, and the cavernous sinus through its anterior course. This triple drainage provides collateral pathways that help maintain venous return if one sinus is compromised.
Because it connects the superficial venous system to multiple major sinuses (superior sagittal, transverse, and cavernous sinuses) through anastomotic veins, it can reroute blood if a sinus is obstructed. This redundancy helps prevent venous stasis and reduces the risk of hemorrhagic complications in conditions like sinus thrombosis.
Deep venous drainage converges via internal cerebral and basal veins into the great cerebral vein, which empties into the straight sinus. Superficial drainage, from veins on the lateral brain surface, primarily empties directly into the superior sagittal sinus (superior group) or indirectly into multiple sinuses (superficial middle cerebral vein).
Deep cerebral venous thrombosis, often involving the internal cerebral veins or great cerebral vein, can cause severe bilateral thalamic edema, altered mental status, and coma. Prompt diagnosis via MRI venography is critical because delayed treatment increases risks of irreversible brain injury or death.
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