Across
- 3. ensures that the air can pass through also known as the windpipe
- 5. oxygen moves from the ______ into the capillary and blood
Down
- 1. muscle expands and contracts, letting air into and out of the lungs
- 2. brings oxygen into the lungs
- 4. takes in air from the environment and warms, moistens and filters the air
- 6. exchanges oxygen and carbon dioxide