Respiratory System

12345678
Across
  1. 3. Hair-like structures that line the nasal cavities and trachea are called:
  2. 4. Another name for the "windpipe":
  3. 7. Where in the respiratory system does gas exchange occur?
  4. 8. This system supplies blood with oxygen in order for the blood to deliver it to the body
Down
  1. 1. The alveoli are surrounded by these:
  2. 2. Which lung has two lobes?
  3. 4. The pharynx is made of how many parts?
  4. 5. The muscle attached to the bottom of the lungs:
  5. 6. The role of the respiratory system is to bring what substance into the body?