What is the term for the formation of red blood cells?

The formation of red blood cells is referred to as erythropoiesis. This process primarily takes place in the bone marrow, where stem cells differentiate into erythrocytes. Erythropoiesis is regulated by the hormone erythropoietin, which is produced in response to low oxygen levels in the blood. This process is crucial for maintaining adequate levels of red blood cells, which are essential for transporting oxygen throughout the body.

In contrast, erythrocytosis refers to an increase in the number of red blood cells, while erythropenia signifies a decrease in their number. Hemolysis is the process of breaking down red blood cells, which can occur due to various factors such as diseases or certain medications. Understanding these distinct terms is essential as they relate to various physiological and pathological states involving red blood cells.