| A | B |
| alveoli | air sacs in the lungs, site of gas exchange |
| diaphragm | sheet of muscle under the lungs that brings air into the lungs |
| bronchi | large branches of the trachea that divide into bronchioles |
| epiglottis | flap of skin that covers the trachea so food does not enter lungs |
| larynx | the voice box, right behind and below the pharynx(throat) |
| pharynx | the "throat" region, gathers air and passes it to your lungs |
| trachea | cartilage tube leading from back of throat toward lungs; windpipe |
| nasal cavity | where respiration begins, air is warmed and moistened by mucus |
| lungs | soft and spongy and is the main component of respiration |