Artery in brain

Artery in brain

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Credit: LUNAGRAFIX/SCIENCE PHOTO LIBRARY

Caption: Cerebral artery in brain. Coloured X-ray angiogram of the head of an elderly male, showing cerebral blood vessels in the brain. A blue profile of the face is seen. Superimposed is a skull X-ray with the blood vessels highlighted (yellow). In the neck region is the carotid artery, which branches into cerebral arteries inside the brain. The brain is the most oxygen-hungry organ in the human body. It receives 20% of the heart's output of blood, and is irreversibly damaged if starved of oxygen for more than a few minutes. Angiograms are obtained by injecting a substance into the blood- stream which is opaque to X-rays. Blood clots or arterial disease may be detected in this way.

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Keywords: aging, anatomy, angiogram, arteriography, artery, blood supply, brain, central nervous system, cerebral, cerebral artery, circulation, cns, elderly man, human body, male, old age, vessel

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