Across
- 4. located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily.
- 6. a pair of spongy, air-filled organs located on either side of the chest (thorax). The trachea (windpipe) conducts inhaled air into the lungs through its tubular branches, called bronchi.
- 9. the airways that lead from the trachea into the lungs and then branch off into progressively smaller structures until they reach the alveoli.
- 11. the muscular tube that carries food and liquids from your mouth to the stomach.
Down
- 1. plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things.
- 2. a flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.
- 3. a colorless and non-flammable gas at normal temperature and pressure.
- 5. where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
- 7. The belly, that part of the body that contains all of the structures between the chest and the pelvis.
- 8. serves as passage for air, moistens and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
- 10. the long curved bones which form the rib cage, part of the axial skeleton.