Across
- 4. – The muscle that contracts and flattens to allow inhalation.
- 6. – The flap that covers the trachea during swallowing.
Down
- 1. – The main organ for gas exchange.
- 2. – The voice box is where the vocal cords are located.
- 3. – The tube that connects the throat to the lungs (singular form of bronchi).
- 5. – The windpipe.