Across
- 3. a large, reddish-brown, glandular organ.
- 5. A pair of organs which is the principal parts of the respiratory system
- 6. The canal which connects the throat to the stomach.
- 7. the main trunk of the arterial system
Down
- 1. The process of eating food.
- 2. the system which takes oxygen into the body and an exchange of oxygen and carbon dioxide takes place
- 4. the system including the heart, blood, blood vessels