| A | B |
|---|
| pharynx | tubelike passageway used by food, liquid, and air |
| larynx | airway to which two pairs of horizontal folds of tissue, called vocal cords, are attached |
| trachea | tube about 12 cm in length, lined with mucous membranes; stays open all the time |
| bronchi | carries air into your lungs; two short tubes |
| alveoli | clusters of tiny, thin-walled sacs at the end of each bronchiole |
| diaphragm | muscle beneath your lungs that contracts and relaxes to help move gases into and out of your lungs |
| emphysema | a disease in which the alveoli in the lungs enlarge |
| asthma | lung disorder which can cause shortness of breath, wheezing or coughing |
