Human respiratory system
Across
- 2. what is known as soundbox
- 4. Hollow areas between the bones in your head that help regulate the temperature
- 6. Muscle that helps your lungs pull in air and push it out.
- 8. Bones that surround and protect your lungs and heart.
- 9. Passage connecting your throat and lungs.
- 11. Two organs that remove oxygen from the air and pass it into your blood.
Down
- 1. which is lined with hair and mucus to filter the air from dust and dirt.
- 3. A small flap of tissue that protects the larynx
- 5. the airtight box that houses the bronchial tree, lungs, heart, and other structures.
- 7. Tube that delivers air from your mouth and nose to the trachea
- 10. Tiny hairs in the nose