Across
- 5. what you have to do to live
- 6. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
- 7. a system the repiratory system works with
- 8. the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.
Down
- 1. a flap that flaps over your windpipe
- 2. helps you breathe
- 3. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box.
- 4. what holds your oxygen and carbon dioxide