Across
- 3. a messenger system that uses hormones to carry out specific functions
- 5. part of the digestive and endocrine systems
- 7. system that coordinates actions and sensory information
- 10. the type of muscle in the stomach and bladder
- 11. these carry blood away from the heart
- 14. basic unit of the nervous system
- 15. the system that removes waste
- 16. small blood vessels
- 19. part of the central nervous system
- 20. the type of muscle in the heart
- 21. the system that breaks down food
Down
- 1. the parts of food used by the body to grow and survive
- 2. connects the kidney to the bladder
- 4. a measure of the amount of energy in food
- 6. this describes the inner layer of bone
- 8. the system that protects body and stores calcium
- 9. produces urea by breaking down proteins
- 12. steady internal conditions when external conditions change
- 13. signal molecule released by organs of the endocrine system
- 17. the name for the hard, outer layer of bone
- 18. connects the pharynx to the bronchi