Across
- 3. both large and small absorb nutrients/water
- 6. part of the brain at the back of the skull
- 7. the "trunk" of the brain
- 9. bundle of nerve fibers encased in the spine
- 12. organ involved in metabolic processes
- 13. used for breaking up and mashing food
- 15. bile is stored in this sac-shaped organ
- 16. used for breathing and smelling
- 17. organ of nervous tissue within the skull
- 19. principal part of the brain
Down
- 1. used for breathing and eating
- 2. forms the lowest part of the brain stem
- 4. most of the digestion process occurs here
- 5. also known as the trachea
- 8. air passages that branch like tree limbs
- 10. a large gland that secretes enzymes
- 11. many tiny air sacs within the lungs
- 14. a nerve cell
- 16. fibers that transmit impulses to the brain
- 18. a pair of organs into which air is drawn
- 20. connects the throat to the stomach