| A | B |
| Respiratory sysetm | parts working together to help you breathe |
| Breathing | Air going in and out |
| Respiration | When CO2 and 02 are traded in the lungs |
| Nasal Cavity | The space between the floor of the brain and the roof of the mouth |
| Nose | Air conditioner warms filters moisten |
| Sinuses | Spaces int he skull that open into the nasal cavity |
| Pharynx | Throat- food and air pass through |
| Epiglottis | Flap of cartilage- closes to keep food out of the windpipe |
| Cilia | Hair that filter dirt |
| Mucous Membranes | Sticky stuff catches dirt |
| Larynx | Voice box- opening to the wind pipe |
| Trachea | Windpipe- one tube |
| Bronchioles | smallest tubes- end in the air sacs |
| Alveoli | Air Sacs- at the end of bronchioles where 02 and C02 are traded |
| Lungs | Where air goes in and out 2 lobes |
| bronchi | 2 large tubes that branch off into each lung |
| diaphragm | muscle that helps you breathe |