Crossword Puzzle

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

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