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sci ch d1
| Question | Answer |
|---|---|
| respiratory system | the group of organs that help you breathe |
| mucus | sticky liquid produced by open parts of the body |
| trachea | a tube going down towards the lungs (aka windpipe) |
| inhale | to breathe in |
| bronchial tubes | the tubes that go from the trachea to the lungs |
| air sacs | the small pouches in which breathing takes place |
| exhale | to breathe out |
| diaphragm | the muscle under the ribs that helps you breathe |
| capillary | a small blood vessel with thin walls through which oxygen, nutrients,and wastes pass |
| excretory system | the group of organs that get rid of cell wastes |
| kidneys | the pair of organs of the excretory system that filter cell wastes from the blood |
| urine | a liquid formed in the kidneys containing nitrogen,extra water, and salt |
| urinary bladder | a strong bagshaped organ that stores urine until it leaves your body |