Across
- 3. air sacs that are incredibly tine and are the location of gas exchange
- 4. windpipe-protected by rings of cartilage
- 5. large sheet of muscle at the base of the lungs/rib cage that is key to inhalation and exhalation
- 6. two pairs of thick bands at the top of the trachea that help make sounds, as they exhale
- 7. warm moist and clean the inhaled air using mucous and hair
- 9. two main branches of the trachea that lead to the lungs
Down
- 1. smallest of air passageways leading to groups of alveoli
- 2. the process by which nutrients are broken down, in the presences of oxygen to release energy for ATP production
- 8. main organs of the respiratory system