Across
- 1. the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.
- 4. a pair of spongy, air-filled organs located on either side of the chest
- 6. are tiny sacs within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream
- 7. a flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.
- 8. a tube that connects the pharynx and larynx to the lungs
- 9. the opening in the lower part of the human face, surrounded by the lips, through which food is taken in and from which speech and other sounds are emitted.
Down
- 2. a large air filled space above and behind the nose in the middle of the face. Each cavity is the continuation of one of the two nostrils.
- 3. any of the minute branches into which a bronchus divides
- 5. the muscle that separates the chest (thoracic) cavity from the abdomen. the main muscle of respiration. Contraction of the muscle expands the lungs during inspiration when one is breathing air in.