Across
- 3. Smaller stems of bronchi
- 6. Passageway from bladder for urine to exit the body
- 8. Principle site of gaseous diffusion between air and blood
- 9. Filters toxins from blood
- 10. Long, fiber like structures that send messages from the body to the brain
Down
- 1. Pathway of blood headed back to the heart
- 2. Tube carrying urine from kidney to bladder
- 4. firm tissue that isn't as hard as bone and is somewhat flexible
- 5. Control center of the nervous system
- 7. Stores urine til it is excreted