How Does Blood Drain from the Brain

The veins of the central nervous system drain deoxygenated blood from the cerebrum, cerebellum, brainstem and spinal cord. After emptying into the dural venous sinuses

How does blood exit the brain?

The internal jugular veins are considered to be the main pathways of cerebral blood drainage. However, angiographic and anatomical studies show a wide anatomical variability and varying degrees of jugular and non-jugular venous drainage.

What happens if blood stops flowing to the brain?

Brain cells do not get the nutrients they need if blood flow to the brain is reduced or stopped. This can prevent them from working correctly. Blood flow that stops for long enough can damage or kill brain cells. This can cause a stroke.