And this is our capillary. It's the pulmonary capillary. So number seven is the pulmonary capillary and number five is our pulmonary arterio. Now, within the capillary we have exchange taking place. Oxygen goes into the capillary and our carbon dioxide leaves the capillaries and goes into region number eight. And then our oxygenated blood travels via this blood vessel, number six, which is our pulmonary Venuel.