GENERAL KNOWLEDGE

Detailed explanation-1: -Human red blood cells (RBC), after differentiating from erythroblasts in the bone marrow, are released into the blood and survive in the circulation for approximately 115 days. In humans and some other species, RBC normally survive in a nonrandom manner.

Detailed explanation-2: -Red blood cells (erythrocytes) The lifespan of a red blood cell is around 120 days.

Detailed explanation-3: -Red blood cells have a rather short lifespan, especially when compared to other cells within the body. This is largely due to their structure and the fact that they are missing many organelles such as a nucleus. Red blood cells typically circulate for approximately 120 days.

Detailed explanation-4: -Human red blood cells (RBCs) are normally phagocytized by macrophages of splenic and hepatic sinusoids at 120 days of age. The destruction of RBCs is ultimately controlled by antagonist effects of phosphatidylserine (PS) and CD47 on the phagocytic activity of macrophages.