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Everyone knows that oxygen is the key to residing. It's in the air you breathe, in your lungs and in your blood. What you might not know is how oxygen gets into your blood and the way the blood carries oxygen through your physique. You breathe air in via your nose and mouth. It makes its means into your lungs and dissolves within the water lining of the alveoli. Oxygen then clings to pink blood cells as they cross by means of the alveolar capillaries - now the oxygen is within the blood. Three types of blood vessels carry blood out of your lungs to each cell in your body. Arteries - Arteries have muscular walls that pump oxygen-crammed blood away out of your coronary heart to the tissues and BloodVitals device organs, just like the brain, kidneys and liver. Arteries get smaller as they get further from your heart. At their smallest point, arteries turn out to be capillaries. Capillaries - Capillaries are the tiniest blood vessels. They join arteries to veins. Veins - Veins are what deliver the "used" blood again to your coronary heart. Blood and Oxygen - Did U Know? The only a part of your physique that has no blood provide is the cornea in the eye. It takes in oxygen directly from the air. A extreme sunburn damages the blood vessels so badly that it takes 4 to 15 months for them to return to their regular condition. The human coronary heart creates sufficient strain to squirt blood 30 feet (9 meters) out of the body.

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