the blood
Blood is a viscous fluid filled with blood vessels. It is driven all over the body as a result of myocardial infarction. The blood moves oxygen from the lungs to the tissues. It also transmits nutrients to the cells to produce energy for the body. Blood consists of: plasma, Red blood cells, white blood cells, and platelets, so we will introduce you in this article to the function of the basic components of blood is platelets.
Platelets
They are cells or parts of the cytoplasm that are approximately three nanometers in diameter and have many shapes. The platelets do not contain nuclei or cellular muscles. They have an annual life of seven days to ten days and have a high bonding ability, adhesion Some of which play a necessary role in the process of blood clotting, ranging between 150000 to 400,000 thousand in cubic mm.
Platelet function
The function of the basic blood platelets is to stop bleeding by forming clots or clots that stop blood leaking as a result of exposure to an injury. Certain essential substances, such as adrenaline, histamine, and serotonin, which play an important role in blood vessel contractions, The process of phagocytosis by binding to microbes that are ingested by phagocytic cells.
It is possible to donate platelets to others, and the percentage of plates that can be donated in the normal between 200 – 400 milliliters, and take the donation of approximately 60 minutes, and talked by drawing blood from which the platelets are extracted, and then returned to the person again by a device Medical Specialist.
It is possible to reduce the proportion of platelets in large quantities, accompanied by the emergence of rash skin with red spots that are most often on the feet, ankles, and result in this lack of internal bleeding, the treasure of the stomach, or bleeding inside the brain, Such as smallpox, colds, immunodeficiency, non-physician medications, or viral vaccinations.
blood types
I think before the beginning of the twentieth century that blood is only one type, and similar to all human beings, when there were attempts to transfer blood from healthy individuals to other patients often died patient, and as a result prevent the transfer of blood for a long time in Europe, The Austrian scientist Karl Landsteiner discovered blood proteins in 1902 after observing the death of patients when blood was transferred to them. The proteins are sugary proteins found on the surface of red blood cells. Scientists then divided the blood groups into four sections, : A, B, AB, O.