Lung | Cannabis Wiki
The lung is the paired organ of respiration occupying the chest cavity (together with the heart) and enveloped by the pleura. Generally the right lung is slightly larger than the left lung and is divided into three lobes, while the left has but two. The primary purpose of the lung is the uptake of oxygen and the elimination of carbon dioxide. It is accomplished by the following processes:
- Ventilation (inspired air reaches the alveoli in the lungs).
- Diffusion (oxygen and carbon dioxide pass across the alveolar capillary membranes).
- Pulmonary capillary blood flow (flow is distributed evenly to all the ventilated alveoli).