Hello, little scientists, I am Professor Bill Tyson and together we are going to know different forms of science. Our subject has been the cardiovascular system, and we talk about some blood cells, but it's not just these cells that form it. The blood, for the most part, is formed by a substance called Plasma.
Plasma is at t and although it has a yellowish color, is almost completely formed of water (90%), but also has substances such as salts, vitamins and molecules that help in blood clotting. One of these molecules is called fibrinogen, it is through this substance that the fibrin that is part of the coagulation will be produced. Inside the plasma are the red blood cells, leukocytes and platelets.
If we think that the cardiovascular system is the transport of cells, oxygen and nutrients to the whole body, it is through the plasma that these cells can get around the blood vessels. In addition to the cell transport function, the plasma carries out another transport function, that of carbon dioxide. We have seen that red blood cells carry some of the carbon dioxide produced by the cells into the lungs to be expelled hrough respiration.
But who carries most of the carbon dioxide is plasma, where the gas gets diluted until it reaches the lungs. For blood tests, it is often necessary to remove fibrinogen from the blood. The technicians then use another substance called anticoagulant.
Once the fibrinogen is removed, what is left of the plasma is called the Serum. Blood is made up of so much more than you thought, right? For now, it's just personal, see you next time.
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