Across
- 3. One of the types of muscle tissue in your body. It is located around the heart.
- 4. Protection and _______________ are the two primary functions of the skeletal system.
- 6. The circulatory system carries oxygen to every _______________ in your body.
- 9. This system is responsible for exchanging gases with the environment.
- 12. The cells that make up the peripheral nervous system.
- 13. The organ that organizes all the signals in the nervous system.
- 14. These are found in closed circulatory systems.
- 15. This process creates carbon dioxide that your body uses the respiratory system to get rid of.
- 16. The system that works to protect you from diseases and illnesses. It also has no major organs.
- 17. You have two of these and they are where your body exchanges gases with the circulatory system.
- 18. This organ provides the pressure to move blood through your body.
- 20. A skeletal system that is made up of bones inside the body.
- 21. The stable environment of your cells that allows a cell to live.
- 23. The core organ in the excretory system (I also taught it as part of the digestive system).
Down
- 1. These chemicals are created by the endocrine system.
- 2. Helps move the bones of the skeletal system.
- 5. This system transports chemicals and oxygen throughout your body.
- 7. The primary purpose of your muscular system.
- 8. The water level of your body.
- 10. What your body releases to start chemical digestion.
- 11. This system allows the digestion of food and absorbing of nutrients in your body.
- 15. The system that makes sure a species survives.
- 19. _______________ nervous system. This system includes your brain and spinal cord.
- 22. Animal exchange gases through their moist _________________________.