| A | B |
| mucus | Sticky liquid produced by linings in nose |
| trachea | tube that leads from throat to bronchial tubes |
| respiratory system | group of organs that take oxygen into the body and remove carbon dioxide |
| bronchial tubes | branches from windpipe that leads to the lungs |
| Alvioli | air sacs |
| wind pipe | trachea |
| larynx | voice box |
| pharynx | throat |
| pleura | lining in front of lungs and behind rib cage to protect lungs |
| diaphragm | muscle that helps you breathe |
| one job of nose | warms air |
| one job of nose | moistens air |
| one job of nose | cleans/filters air |
| air sacs | exchange of gases takes place in these pouches |
| red - full donut shaped blood cells | carry oxygen to the body |
| dull, dark purple blood cells | carry carbon dioxide from the body |
| breathe in | inhale |
| breathe out | exhale |
| diaphragm contracts and moves down | muscle helps make space for air to come into lungs |
| diaphragm relaxes back to domelike shape | air is pushed out of lungs as this muscle makes less space |
| capillaries | tiny blood vessels connected to air sacs |
| cells use oxygen to break down sugar into | break down into carbon dioxide and water |
| Energy comes from | process of oxygen rich cells breaking down sugar |