Across
- 1. Maintain the body's immunity function
- 4. Circulates oxygen, CO2, heat, water, nutrients, wastes
- 8. Breaks down macromolecules and absorbs necessary nutrients
- 9. Works with the skeletal system to provide movement
- 10. Provide oxygen to the body and to remove carbon dioxide from the blood
- 11. Provides body structure and support
- 12. Filters wastes from blood; maintains body's internal nutrient balances
Down
- 2. Circulates hormones around the body to control body functions
- 3. Group of organs that perform closely related functions.
- 5. Producing offspring
- 6. Serve as the outer protection for the body.
- 7. Serves as the body's main messaging center