The Suboccipital Venous Plexus drains the back of the head.

It communicates with the external vertebral venous plexuses

External vertebral venous plexuses

The external vertebral venous plexuses best marked in the cervical region, consist of anterior and posterior plexuses which anastomose freely with each other....

. The external vertebral venous plexuses travel inferiorly from this suboccipital region

Suboccipital triangle

The suboccipital triangle is a region of the neck bounded by the following three muscles of the suboccipital group of muscles:* Rectus capitis posterior major - above and medially* Obliquus capitis superior - above and laterally...

 to drain into the brachiocephalic vein

Brachiocephalic vein

The left and right brachiocephalic veins in the upper chest are formed by the union of each corresponding internal jugular vein and subclavian vein...

. The occipital vein

Occipital vein

The occipital vein begins as a plexus at the posterior aspect of the scalp from the external occipital protuberance and superior nuchal line to the back part of the vertex of the skull....

 joins in the formation of the plexus deep to the musculature of the back and from here drains into the external jugular vein.

The plexus surrounds segments of the vertebral artery

Vertebral artery

The vertebral arteries are major arteries of the neck. They branch from the subclavian arteries and merge to form the single midline basilar artery in a complex called the vertebrobasilar system, which supplies blood to the posterior part of the circle of Willis and thus significant portions of the...

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