In addition, the blood also contains elements of our body’s own defence system and the components of blood coagulation. In order to be able to perform these manifold tasks, blood consists of a whole series of different cells that are produced from stem cells in the bone marrow in a process known as blood formation.
Normal Blood Formation
In the case of special requirements such as infection, the body can also react specifically and increase the number of cells required, in this case the cells of the immune system.
Half of our blood consists of blood plasma and blood cells. B-cells, T-cells and natural killer cells, collectively called lymphocytes, which also belong to our immune system, form the cells of the lymphatic series.
Red blood cells
The most important task of erythrocytes is to transport oxygen from the lungs to the various organs and tissues and to bring carbon dioxide from the tissues into the lungs. Erythrocytes are the most numerous cells in the blood and, like most other blood cells, are produced in the bone marrow.
They are formed in the bone marrow and are responsible for blood coagulation, the so-called haemostasis. Thrombocytes ensure that the walls of the blood vessels are sealed in the event of an injury and platelets form at the injured site within a very short time, which lead to hemostasis. Later, the platelets disintegrate and release substances that activate the coagulation factors of the blood plasma.