Question

red blood cells live upto​

Answer 1

Answer:

Normal human red blood cells have an average life span of about 120 days in the circulation after which they are engulfed by macrophages.

Answer 2

• In the circulation, normal human red blood cells have a lifespan of roughly 120 days before being consumed by macrophages.
• This is a fairly effective mechanism, since macrophages phagocytose around 5 million erythrocytes every second without releasing much hemoglobin into the bloodstream.
• Despite several studies, the exact molecular process by which macrophages detect senescent red blood cells for clearance has remained a mystery.
• Red blood cells age in the circulation and undergo many physicochemical changes.
• A macrophage identification tag based on some of these improvements has been suggested.
• The development of neoantigens on the surface of red cells, exposure to phosphatidylserine, and diminished deformability are the most common explanations for red cell clearance mechanisms.