The major components of the respiratory system are the bronchi, the larger conducting airways that begin at the end of the trachea and go into the lung; the bronchioles, the more narrow airways that branch from the bronchi; and alveoli, tiny air sacs located at the end of the bronchioles where the exchange of oxygen and carbon dioxide takes place -- the respiratory zone. Blood carries oxygen from the respiratory zone to cells and returns carbon dioxide to the respiratory zone for disposal via exhalation.
- Q What does breathing have to do with my cells?
- Q How can I tell if my lungs are healthy?
- Q What is deep abdominal breathing?
- Q How can I strengthen my lungs?
- Q What is the role of oxygen in my body?
- Q What is the role of the diaphragm in my body?