Given video gives precise knowledge about Red blood cells or Erythrocytes. If you want to get your basics strong about RBCs, then this video is perfect for you. Also, this video contains considerable visuals, which will help in better understanding. TIMELINE: 0:06 introduction 0:27 contents of blood 0:34 Red blood cells 0:56 Count of RBCs body makes per day 1:04 Functions of RBCs 1:42 Structure of RBCs 3:20 Quick question