| A | B |
|---|
| air sack | one of the tiny pouches in the lungs in wich the exchange of oxygen and carbindioxide |
| bronchial tube | one of the pair of tubes that branche off from the trachea and go into the lungs |
| capillary | a tiny blood vessle with thin walss through wich oxygen, nutrients, and wastes pass |
| diaphragm | the large muscle below the lungs that helps you breath |
| excretory system | the group of organs that get rid of cell wastes |
| exhale | to breath out |
| inhale | to breath in |
| kidney | one of the pair of organs of the excretatory systemthat filters cell wastes from blood |
| mucus | sticky liquid |
| respitory system | the group of organs that take oxygen from the air and remove carbinedioxide from the body |
| trachea | wind pipe |
| urinary bladder | a muscular baglike organ that stores urin untill it leaves the body |
| urine | a liquid formed in the kidneys consisting of nitrogen wastes, some salts, and extra water |
