Across
- 4. or windpipe- is one part of your airway system.
- 6. prominent structure between the eyes that serves as the entrance to the respiratory tract
- 7. blood vessels in humans, and most other animals that carry blood towards the heart
Down
- 1. system is made up of blood vessels that carry blood away from and towards the heart.
- 2. a set of things working together as parts of a mechanism or an interconnecting network.
- 3. the primary organs of the respiratory system in humans
- 5. the blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body.