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<br>What is blood made up of? Blood is made up of about 55% blood plasma and about 45% various kinds of blood cells. Blood plasma is a light yellow, barely cloudy liquid. Over 90% of blood plasma is water, whereas less than 10% consists of dissolved substances, principally proteins. Blood plasma additionally accommodates electrolytes, vitamins and nutrients corresponding to glucose and amino acids. Over 99% of the stable particles in blood are cells known as red blood cells (erythrocytes) as a consequence of their pink colour. The remaining are pale or colorless white blood cells (leukocytes) and platelets (thrombocytes). Red blood cells look like discs which might be thinner within the middle. They'll simply change shape to "squeeze through" slender blood vessels. Unlike many different cells, pink blood cells haven't any nucleus ("info center"). All purple blood cells comprise a red pigment often known as hemoglobin. Oxygen binds to hemoglobin, and is transported around the physique in that approach.<br> |
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<br>In tiny blood vessels in the lung, the pink blood cells choose up oxygen from inhaled (breathed in) air and carry it through the bloodstream to all parts of the physique. Once they attain their aim, they launch it again. The cells want oxygen for metabolism, which creates carbon dioxide as a waste product. The carbon dioxide is absorbed from the cells by the blood plasma (some of it binds to hemoglobin too) and is transported again to the lungs within the bloodstream. There it leaves the physique when we breathe out. Red blood cells also can choose up or launch hydrogen and nitrogen. By choosing up or releasing hydrogen they assist to keep the pH of the blood stable |
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