sireen y.over 7 years ago

brain

this is a rare shot of a living brain, revealing the cerebral cortex of an epileptic patient during surgery. Oxygenated blood flushes bright red in a web of small arteries while larger veins, tucked in the sulci or crevices of the brain, carry away purplish, deoxygenated blood. Gray matter (so-dubbed because that’s its color after death) is pink with life.