| A | B |
|---|
| External respiration | Exchange of O2 & CO2 between lungs & outside environment |
| Internal respiration | Exchange of CO2 & O2 between the cells & Lymph |
| Cellular respiration | Use of O2 to release stored energy |
| Anterior nares | nostrils; where air enters body |
| Nasal septum | divides nasal cavity into right & left sides |
| Sinuses | 4 air-filled cavities; ethmoid, maxillary, shpenoid, frontal |
| Cilia | hair that prevent particles from entering nose |
| Pharynx | throat; passageway for air and food |
| Epiglottis | flap of cartilage that prevents food or liquid from entering trachea |
| Larnyx | Voice box |
| Trachea | windpipe |
| Bronchus | End of trachea divided into right and left sides |
| Alveoli | Air-sacs in lungs where O2 and CO2 exchange take place |
| Surfactant | lipid material in alveoli that prevents collapse |
| Pleura | Membrane covering lungs |
| Pneumothorax | collapsed lung |
| Inspiration | breathing air in |
| Expiration | breathing air out |
| Apnea | No breathing |
| Dyspnea | Difficult or labored breathing |
| Tachypnea | rapid, shallow breathing |
| Pharyngitis | Sore throat |
| Laryngitis | inflammation of the larynx |
| Sinusitis | Infection of the mucous membrane lining sinus cavities |
| Bronchitis | inflammation of the membrane in trachea and bronchi |
| Asthma | Airway obstruction caused by spasms of bronchi, excess mucous production and inflammation of bronchi |
| Pneumonia | infection of the lung |
| Pulmonary Embolism | blood clot in the lung |
| COPD | Chronic obstructive pulmonary disease; emphysema and chronic bronchitis |
| Tuberculosis | Infectious disease of lungs caused by tubercle bacillus |
