The notion of tissue It can be used in different contexts. For botany, anatomy and zoology, a tissue is a cell clustering which, acting in a coordinated way, have a common purpose. Bloody , meanwhile, is what is linked to the blood (The reddish fluid that, through veins, arteries and capillaries, circulates through the body).
The concept of Blood tissue refers to the one that is composed of a liquid matrix and by different kinds of cells . Usually, the blood tissue is qualified as a connective tissue specialized , which is the name of those tissues that allow the integration of the different organic systems and that facilitate their support. For some experts, however, blood tissue is one of the primordial tissues .
In the blood tissue a difference can be distinguished liquid phase (he blood plasma ) and one solid phase (composed of platelets , the white blood cells and the Red blood cells ). Both phases are called blood components : the liquid phase is the serum component , while the solid phase is the cellular component .
The blood vessels they contain the blood tissue and allow it to be distributed by the body . Among the various functions that it fulfills are the transfer of oxygen, the provision of nutrients and the transport of cells and various substances.
He circulatory system It is responsible for the circulation of blood tissue through the body. The organ that drives circulatory activity is the heart , which pumps blood through veins, arteries and capillaries.
White blood cells
The white blood cells they are also called leukocytes and they are one of the cellular actors of our immune system . These are cells capable of migrating, which use the blood to access various regions of the body. Among the main functions of white blood cells are the destruction of the pathogenic microorganisms and of the cells they infect, and the segregation of substances such as antibodies , which are responsible for fighting infections.
According to their normal count, white blood cells are found in the blood at a maximum of 11 500 per cubic millimeter, but this value can be as low as 4 500 , and in this difference influence various factors that are grouped into physiological conditions (stress, pregnancy, age, physical activity, etc.) and pathological (cancer, infections, immunosuppression, etc.).
Red blood cells
Also known as erythrocytes or red blood cells, the Red blood cells they represent practically the 96% of the so-called form elements or figurative (the aforementioned red and white blood cells and platelets). It is interesting to note that the amount present in men and women is considerably different: 5 400 000 and 4 800 000 per cubic millimeter, respectively. In addition, as can be seen, it is much larger than that of white blood cells.
Red blood cells have no organelles or nucleus, and much of their cytoplasm is made up of certain enzymes and a protein called hemoglobin , which is responsible for the transport of oxygen. The blood tissue also carries the carbon dioxide , in three ways: bicarbonate, which serves to regulate the pH (its normal value in the arteries is usually between 7,36 and 7,44 ); carbodynamic compounds, in a 27% ; free dissolved, in a 8% . On the other hand are the glycoproteins , located in the plasma membrane, thanks to which it is possible to define the groups blood.
An important protein of blood is the hemoglobin , which is found only in red blood cells. It is the pigment responsible for the red color, so characteristic, and also helps in the transport of carbon dioxide. Your normal levels do not exceed 18 g / dl of blood tissue and live approximately four months, then be removed and removed.