MICROANATOMY

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 cells have an average life span of about 120 days after which they are cleared by-phagocytosis by reticuloendothelial macrophages due to accumulated changes during their life span. Approximately 5 million erythrocytes (the average number per l) are removed from the circulation every second.

Detailed explanation-3: -Red blood cells make up almost half of your blood. The lifespan of a red blood cell is around 120 days.

Detailed explanation-4: -Red blood cells at work Red blood cells also remove carbon dioxide from your body, bringing it to the lungs for you to exhale. Red blood cells are made in the bone marrow. They typically live for about 120 days, and then they die.

Detailed explanation-5: -Because erythrocytes and platelets do not contain a nucleus, they cannot divide to create replacements of themselves, nor can they create proteins to repair themselves when damaged. This is why erythrocytes only have a lifespan of 120 days, while platelets only live for about ten days.