Blood, Part 2: There Will Be Blood | Crash Course A&P 30
We'll start by explaining the structure and function of your erythrocytes, and of hemoglobin, which they use to carry oxygen. We'll follow the formation and life cycle of a red blood cell, including how their levels are regulated by EPO and their signaling molecules. We'll wrap up by looking at how blood doping works and how it is truly a recipe for disaster.