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Why does our skin turn blue?
🤷♂ In the event of a stroke or injury, small blood vessels - capillaries - are damaged. Blood flows from them and spreads to the soft tissues under the skin.
🩸 There is a lot of hemoglobin in the blood, which gives it a red color and a new lesion turns red due to hemoglobin.
🧬 White blood cells - leukocytes begin to arrive at the site of damage.
They surround the bleeding site and begin to destroy blood cells.
🎨 When leukocytes destroy hemoglobin, the lesion changes from purple-blue to yellow-green and then disappears…