The Respiratory System
Across
- 2. The part of the face that bears the nostrils and covers the anterior part of the nasal cavity.
- 5. A muscular tube that connects the nasal cavity and mouth to the esophagus and trachea.
- 6. Tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged with the blood.
- 7. The two main branches of the trachea that lead into the lungs.
- 9. The pair of organs in the chest that help oxygen enter the body and remove carbon dioxide.
- 10. A tube that connects the throat to the lungs, also known as the windpipe.
- 11. A gas that is essential for life and is used by the body to create energy.
Down
- 1. The system in the body responsible for breathing and exchanging gases between the body and the environment.
- 2. The space inside the nose that filters, warms, and moistens air as it is breathed in.
- 3. A dividing wall or membrane especially between bodily spaces or masses of soft tissue.
- 4. A dome-shaped muscle beneath the lungs that helps with breathing by contracting and relaxing.
- 7. Small tubes in the lungs that branch off from the bronchi and connect to the alveoli.
- 8. A waste gas produced by the body that is exhaled through the respiratory system.