| Question | Answer |
| Cyanosis | bluish color of skin caused by oxygen deficiency in the blood |
| Apnea | cessation of breathing |
| Pleura | serous membrane that covers the lungs and lines the chest cavity |
| Cough | mechanism for clearing obstructions from airway |
| Emphysema | swelling of alveoli due to chronic bronchial obstruction |
| Bronchi | branches of trachea leading to lungs |
| Exhalation | expulsion of air from alveoli of lungs |
| Lungs | pair of lobed organs in chest cavity, extending from the diaphragm to the clavicle |
| Nose or mouth | where air enters respiratory system |
| Esophagus | pathway for food, leads to the stomach |
| Cilia | tiny hairs that filter out dust and other particles that enter the nose |
| Bradypnea | slow breathing |
| Anoxia | lack of oxygen |
| Bronchioles | small tubes (thin as a strand of hair) in lungs branching from bronchi to alveoli |
| Dyspnea | Painful or Labored breathing |
| Alveoli | tiny air sacs, where exchange of oxygen and carbon dioxide takes place |
| Respiration | exchange of oxygen and carbon dioxide |
| Influenza | acute, contagious disease characterized by inflammation of the upper respiratory tract and generalized aches and pains |
| Pharynx | extends from mouth to esophagus; provides passageway for air from nostrils to trachea |
| Trachea | windpipe, extends from larynx to bronchi |
| Common cold | most widespread of all communicable diseases, characterized by swollen and inflamed mucous membranes of the nose and throat with copious discharge |
| Eupnea | normal respiration |
| Bronchitis | the membranes lining the larger bronchial tubes become inflamed and an excessive amount of mucus is produced |
| Pneumonia | inflammation of the alveoli of the lung – may be caused by bacteria or viruses |
| Epistaxis | nose bleed |
| Diffusion | moving of molecules from a region of higher concentration to a region of lower concentration of molecules |
| Asthma | allergic reaction in which the walls of the small bronchioles swell with a thick mucus secretion |
| Hay fever | sensitivity to foreign proteins causing watery discharge from eyes and nose |
| Larynx | at upper end of trachea; contains vocal cords |
| Hyperpnea | abnormally increased breathing |
| Diaphragm | muscle separating the abdominal and chest cavities; contraction of the diaphragm causes air to enter the lungs |
| Sinusitis | inflammation of a sinus |
| Inhalation | phase during which air is drawn into lungs |
| Breathing | inhaling and exhaling of air |
| Asphyxia | oxygen deficiency with a resulting increase of carbon dioxide in the tissues |
| Tachypnea | fast breathing |
| Pleurisy | inflammation of the pleura – usually accompanies infections of the lung |
| Epiglottis | covers air only passage keeping food and liquid out of lungs |
| Cellular respiration | use of oxygen and nutrients to produce energy, water, and carbon dioxide |
