Blood groups. Aerobic respiration, Anaerobes

Liquid circulatoriosLos higher animals, as they increase their mass and their structures differ, they require a liquid internal medium that is responsible for bringing oxygen quickly to the cells, along with the food substance, while collecting products catabolism that are driven by respiration or by the kidneys in the act of excretion. In vertebrates, is blood, lymph and plasma Who does these functions. Erythrocytes have a life on the average of 46 days, while leukocytes and platelets are three to four days. The formation of these takes place in the red marrow of bones. Lymphocytes, however, are formed in the spleen and lymph linfaticos.Coagulacion of sangre.Las platelets are responsible for clog the blood vessels to prevent bleeding. These are enclosed sensitizer, the trombocinasa, which is free to break out those in contact with the edges of the wound, the trombocinasa combines with a substance in the blood plasma, thrombogenicity, and calcium ions, resulting the formation of an enzyme called thrombin, which converts fibrinogen into fibrin. Fibrin is insoluble and precipitates, blocking the blood herida.Anticuerpos. When the body feels invaded by foreign organisms, whether pathogenic beings like any complex subject, besides the cellular defense by leukocytes uses a chemical defense was responsible for destroying antigens. Chemical defense is provided by antibodies, which belong to the globulins of blood plasma. When the antigens are in the cells, the antibodies cause agglutination and even dissolution of mismasGrupos BLOOD. In the erythrocytes of the human species may be two agglutinogen (antigens) as A and B, whereas in the plasma may be two agglutinins (antibodies), the a (or anti-A) and b (or anti-B). A person in their plasma agglutinogen A can not have in its plasma agglutinin to, but if the b. All this makes it possible that in humans there are four possible blood groups: Group O, without agglutinogen in red cells, but with the agglutinins a and b in plasma.Grupo A with agglutinogen A in red cells and agglutinin b in plasma.Grupo B, B agglutinogen in red cells and the agglutinin to the plasma.Grupo AB, with agglutinogen A and B in red cells and no agglutinins in plasma.Teniendo this into account, the donor group O is universal, because their red blood cells do not clump together in any case, but blood can not receive more than the people of the same group because they have the b agglutinins in their plasma. The group AB is universal recipient having no agglutinins in their plasma, but can only give blood to those of the same RESPIRACIONTodos grupo.LA living things need energy to carry out its functions. This energy is obtained from foods through the combustion of these when combined with oxygen. This phenomenon is called respiration. A respiration in which oxygen acts as a fuel is called aerobic. However, there are certain agencies that are able to release the energy contained in food by procedures other than the combination with oxygen, as in yeast and intestinal worms. These break down food by fermentation, ie by a respiratory process without oxygen, which is the breath Anaerobes.

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