Crossword Puzzle
Across
- 2. the center of the respiratory system
- 5. commonly called the windpipe, carries the air to the left and right bronchus
- 7. the smaller branches of the bronchial airways in the respiratory tract
- 9. either of two external openings of the nasal cavity in vertebrates that admit air to the lungs
- 10. a passage or airway in the respiratory system that conducts air into the lungs
- 11. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords in humans and other mammals; the voice box
Down
- 1. a leaf-shaped flap in the throat that prevents food from entering the windpipe and the lungs
- 3. a large, air-filled space above and behind the nose in the middle of the face
- 4. the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus
- 6. an oval-shaped cavity inside the skull, the two main functions are eating and speaking
- 8. located below the lungs, is the major muscle of respiration, It is a large, dome-shaped muscle that contracts rhythmically and continually