Across
- 3. Smaller tubes that bring air to and from the lung
- 5. It is a dome-shaped muscle that helps to facilitate breathing
- 7. It contains two nostrils which brings air in and out of the body
Down
- 1. Another name for windpipe
- 2. It helps to bring oxygen into the body and remove carbon dioxide from the body through breathing
- 4. A tube that connects the upper respiratory system to the lungs
- 6. The main part of the respiratory system; it transports oxygen into the bloodstream