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X-Ray of blood vessels in the brain.

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When something gets compromised, the Circle of Willis was designed to compensate. :)

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Vertebral and Internal Carotid arteries - ooooh this is pretty cool!!!

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Stroke is the loss of brain function due to blocked blood circulation to the brain. Strokes may be caused by an uncommon type of narrowing, obstruction, or leak in the lining of the carotid artery. This leaking of blood into the artery wall (dissection) may cause a clot to form, reducing blood flow and raising the risk of stroke. The leak may arise from an injury to the neck, which means strokes caused by carotid dissection may occur in young people as well as older people.

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from Science News

Brain’s blood appetite grew faster than its size

BLOOD FLOW The internal carotid arteries pass into the skull through two tiny…

What is Carotid Artery Disease? | Symptoms, Causes & Treatment

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Clinical Manifestations of Internal Carotid Artery Territory Ischemia

sound of heartbeat in ear. internal carotid artery dissection

Circle of Willis is the joining area of several arteries at the bottom (inferior) side of the brain. At the Circle of Willis, the internal carotid arteries branch into smaller arteries that supply oxygenated blood to over 80% of the cerebrum. Blockage of blood flow to the brain for even a short period of time can be disastrous and cause brain damage or even death.

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Instant Anatomy - Head and Neck - Vessels - Arteries - Internal carotid - Near jugular foramen

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