Summary:
- Inhaling and exhaling may seem like simple actions, but they are just part of the complex process of respiration, which includes these four steps.
- Respiration begins with ventilation, which is the process of moving air in and out of the lungs.
- After the blood in the pulmonary capillaries becomes saturated with oxygen, it leaves the lungs and travels to the heart.
- When breathing is too slow, blood contains too much carbon dioxide and becomes too acidic.
- Gas exchange is also needed to carry away waste of the blood.