Hemoglobins: Carrying Oxygen in the Blood

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Hemoglobin is a protein present in red blood cells (erythrocytes), constituting approximately 35% of its weight. It is a pigment present in the blood responsible for transporting oxygen from the lungs to tissues throughout the body.


In addition to transporting oxygen, hemoglobin also participates in the process of transporting nutrients to all cells of the body, in which the blood carries nutrients and collects the substances secreted by the cells and then carries them out of the body. .

To combine with oxygen, erythrocytes need to contain enough oxygen, and this depends on the levels of iron present in the body. Iron deficiency in the body leads to a condition known as anemia.

Hemoglobin can carry oxygen in excess of twenty times its volume. However, when it binds to carbon monoxide, it loses its ability to combine with oxygen, which will result in the loss of its function and, consequently, possible damage to the body.

The average lifespan of red blood cells is approximately 120 days, after which time they degenerate in the spleen or circulatory system, however, iron reintegrates into new red blood cells that form in the bone marrow.


Hematomas are formed by the escape of erythrocytes to the tissues. This usually occurs by rupturing one or more blood vessels when an injury occurs. The degradation of hemoglobin converts to biliary pigments, which are responsible for the yellowish coloration of hematomas.