Human bodies make 2 million red blood cells per second. They each live for 120 days and spend that time zooming completely around the body every 20 seconds, carrying oxygen from the lungs to other ...

Red blood cells carry oxygen from the lungs around the body. They then carry carbon dioxide from around the body back to the lungs. These cells are an important component of blood. However, a range of ...

Red blood cells are the most abundant cells in the body. It has long been known that when red blood cells break down or anemia occurs due to bleeding, the hormone erythropoietin (EPO) increases, ...