Across
- 1. where oxygen, or air, enters your body
- 2. protects the lungs
- 5. large tube made of cartilage; also known as windpipe
- 7. the space where lungs are located
- 8. tiny sacs of air at the end of bronchioles
Down
- 1. the open space behind the nose where air passes through
- 3. small branches of bronchi that carry air
- 4. major air passage to the lungs
- 6. sheet of muscle that separates the thoracic cavity from the abdomen
- 9. organs that expand when filled with air