Across
- 2. any of the fine branching blood vessels that form a network
- 5. any of the minute branches into which a bronchus divides.
- 6. a large membranous tube reinforced by rings of cartilage
- 8. A part of the human body
- 9. the spreading of something more widely.
- 10. gas produced by burning carbon
Down
- 1. the air that we breath from
- 3. each of the pair of organs situated within the ribcage
- 4. any of the many tiny air sacs of the lungs
- 5. any of the major air passages
- 7. each of a series of slender curved bones
- 9. a dome-shaped muscular partition