| A | B |
| asthma | disorder that causes difficulty breathing |
| cystic fibrosis | disorder with excess mucus production |
| diaphragm | muscle separating thoracic & abdominal cavities |
| emphysema | disorder with decreased elasticity of lungs |
| epiglottis | flap of cartilage that covers trachea |
| lung | spongy organs that include bronchi, alveoli, blood vessels |
| mucus | substance produced by mucous membranes & glands |
| TB | tuberculosis |
| tuberculosis | a bacterial infection of the lung |