| A | B |
|---|
| apnea | temporary stoppage of breathing movements |
| dyspnea | labored breathing or difficulty breathing |
| eupnea | normal or easy breathing with usual quiet inhalations and exhalations |
| orthopnea | difficult or labored breathing |
| cilia | tiny lashlike processes of protoplasm |
| hyperpnea | increase in the depth and rate of breathing accompanied by abnormal exaggerated respiratory movements |
| inspiration | drawing in of air; inhalation |
| expiration | act of breathing forth or expelling air from lungs |
| cellular respiration | use of oxygen to release energy from the cell |
| external respiration | breathing; act of inspiration and expiration |
| internal respiration | the exchange of carbone dioxide and exygen between the cells and the lymph surrounding them, plus the oxidative process of energy in the cells |
| surfactant | lipid material covering the inner surfaces of the aveoli |
| Hering-Brewer reflex | a reflex that prevents overstretching of the lungs |
| tachypnea | abnormally rapid rate of breathing |
| turbinate | shaped like a spiral; the three bones situated on the lateral side of the nasal cavity |
| hiccough | spasm of the diaphragm and spasmodic closure of glottis |
