Hemoglobin bind with oxygen
Oxygen diffuse via passive transport
Hemoglobin bind with dissolve oxygen and release it make the diffusion continuously.
Hemoglobin efficient bind with oxygen
Carbon dioxide travel in blood 3 ways
◦ Most enter red blood cell and dissolve in water---carbonic acid
◦ The rest dissolve in plasma
◦ Bind to hemoglobin and protein (this process reverse in lung)