The Respiratory System
Across
- 4. When this organ moves down air is drawn into the lungs
- 6. The smaller branches that divide the nose and the mouth
- 7. Also known as the voice box
- 8. Where air is drawn moistened and filtered
Down
- 1. A flap of cartilage behind the root of the tongue which is depressed during swallowing to cover the opening of the windpipe
- 2. Reinforced by rings of cartilage extending from the larynx to the bronchial tubes and taking air to and from the lungs
- 3. Where oxygen and carbon dioxide is diffused into the bloodstream
- 5. Located at the back of the nose and mouth
- 6. The major air passages of the lungs which diverge from the windpipe
- 7. Set of organs in the rib cage with branching passages where air is inhaled and exhaled