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Blood as a kind of tissue. The main functions of the blood, the hemostatic system, which supports the functions of the blood. Medicines that promote and prevent blood clotting. Drugs that dissolve blood clots and reduce the risk of blood clots. Hematopoiesis, drugs that stimulate this process.
Blood is a type of connective tissue. It moves continuously through the blood vessels. The movement of blood is supported by the cardiovascular system, in which the heart and the smooth muscles of the walls of arteries and veins play the role of a pump. Blood is one of the three components of the internal environment that ensure the normal functioning of the body as a whole. The other two components are lymph and intercellular (tissue) fluid. Blood is essential for the transport of substances throughout the body. Blood for 55% consists of plasma, and the rest is blood corpuscles suspended in it - erythrocytes, leukocytes and platelets. In addition, it contains cells (phagocytes) and antibodies that protect the body from disease-causing microbes.
If a person weighs 65 kg, he has 5.2 kg of blood (7-8%); of 5 liters of blood, about 2.5 liters is water.
Red blood cells are red blood cells. Most of them are among the blood cells. Red blood cells contain hemoglobin, which is essential for oxygen transport. They are involved in gas exchange, in the regulation of acid-base balance and in a number of enzymatic and metabolic processes.
Leukocytes are white blood cells. They perform a protective function as part of the body's immune system. Among leukocytes, granulocytes, lymphocytes and monocytes are distinguished.
Platelets are platelets. They contain thromboplastin, which is a clotting factor and plays an important role in stopping bleeding.