Lung anatomy

this image shows the area of exchange of gases between the blood and the air in the lungs and the blood circulation in the thorax region
showing:
1. superior vena cava
2. inferior vena cava
3. heart
4. pulmonary trunk
5. left pulmonary artery
6. alveoli
7. capillaries of the lung (here the exchange of gases"O2 and CO2" happens)
8. pulmonary veins
9. heart
10. aorta