Across
- 3. Takes in oxygen and removes carbon dioxide and water
- 5. The digestive system takes in and breaks down the __ we eat
- 7. Provide shape and support
- 9. Collects excess fluid and returns it to blood
- 10. Slow response, long-lasting
- 12. Removes waste products from cellular metabolism
- 14. The mechanics that control homeostasis are activated in response to ______
- 17. The smallest living units in the human body
- 19. Failure of homeostatic regulation
- 20. It takes more muscles to frown than to____________?
- 21. A major organ that is known as the command center of the body
Down
- 1. Brain tissue needs _____ and glucose to function
- 2. Allows organisms to reproduce which prevents their species from coming extinct
- 4. Transport materials to and from cells
- 6. Allows for movement by contracting
- 8. Fights off foreign invaders in the body
- 11. The organ system responsible for protection from environmental hazards and involved in temperature control
- 13. Protects the lungs and other vital organs
- 15. Gathers and interprets information
- 16. These are all Human Body _____
- 18. Digest food into smaller molecules and absorb nutrients