Across
- 2. system the set of organs that allows a person to breathe
- 5. extremely small branches of the bronchus
- 7. two external openings of the nasal cavity
- 9. major air passages of the lungs that branch from the windpipe
- 12. a large tube connecting the larynx to the bronchial tubes which moves air to and from the lungs – the windpipe
- 13. tiny air sacs of the lungs which rapidly exchange gases
- 14. an organ that passes oxygen into every blood cell carried through its capillaries
Down
- 1. cavity behind the nose and mouth
- 3. the flap that covers the windpipe during swallowing
- 4. the opening in the face, surrounded by the lips, through which food is taken in and from which speech and other sounds are emitted
- 6. a membrane around the lungs
- 8. a dome-shaped muscle that inflates the lungs, allowing breathing
- 10. passage a channel for airflow through the nose
- 11. hollow muscular organ holding the vocal cords – the voice box