Respiratory system

3. tubes/bronchi - tubes at the base of the windpipe that connect into each lung.
6. - blood vessels in the alveoli walls that move oxygen and carbon dioxide.
8. (voice box): a hollow organ that allows us to talk and make sounds when air moves in and out.
9. - tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
10. - Two organs that deliver oxygen from the air to our red blood cells. They also help the body get rid of CO2 gas (a waste gas) when we breathe out.
11. - a passage that connects our throat to our lungs.

1. and nose - openings in our head that draw air in from outside your body into your respiratory system.
2. - small branches of the bronchial tubes that lead to the alveoli.
4. - a that supports the lungs in pulling in air and pushing it out.
5. - a tube that transports air from the mouth and nose to the trachea (windpipe).
7. - tiny hairs that move in a wave-like motion to filter dust and other irritants out of your airways.