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Blood that is blue

That's a good observation. When you see blood outside the body it is usually a dark red. This blood is from the veins. Sometimes you may cut an artery. This blood is bright red.

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The authors do not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment. Chemicals appear particular colors to our eyes based on the wavelengths of light they reflect. Hemoglobin bound to oxygen absorbs blue-green light, which means that it reflects red-orange light into our eyes, appearing red. Without oxygen connected, blood is a darker red color. Carbon monoxide, a potentially deadly gas, can also bind to heme , with a bond around times stronger than that of oxygen. Sometimes blood can look blue through our skin. But this is wrong; human blood is never blue. The bluish color of veins is only an optical illusion. Blue light does not penetrate as far into tissue as red light.

Venous blood is deoxygenated blood which travels from the peripheral blood vessels , through the venous system into the right atrium of the heart. Deoxygenated blood is then pumped by the right ventricle to the lungs via the pulmonary artery which is divided in two branches, left and right to the left and right lungs respectively. Blood is oxygenated in the lungs and returns to the left atrium through the pulmonary veins. Venous blood is typically colder than arterial blood , [1] and has a lower oxygen content and pH. It also has lower concentrations of glucose and other nutrients, and has higher concentrations of urea and other waste products. The difference in the oxygen content of arterial blood and venous blood is known as the arteriovenous oxygen difference.

About videoVideo сomments (6)

Views: 807

From: Moogugal

Added: 26.08.2020

Category: Strapon

Tags: blood+that+is+blue

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