Body Systems

4. Body system that defends the body against pathogens; returns excess fluid to the bloodstream
6. Body system that breaks down food to absorb nutrients; eliminates solid waste
7. Body system that detects and processes sensory information; coordinates responses; controls bodily functions through electrical signals
8. Body system that facilitates gas exchange (oxygen in, carbon dioxide out); helps regulate blood pH
10. Body system that provides structure and support to the body; protects internal organs; produces blood cells
12. Most digestion occurs in these organs
13. Body system that enables movement through contraction; maintains posture; generates heat
14. Body system in plants that is responsible for absorbing water
15. Body system that produces gametes (sperm or eggs); supports development of offspring in females

1. Body system that produces and releases hormones to regulate growth, metabolism, and homeostasis
2. A chemical messenger that regulates body processes; made by endocrine system
3. Body system that transports oxygen, nutrients, hormones, and waste through the blood; helps regulate body temperature
5. Body system that filters waste from blood; regulates water and electrolyte balance; maintains blood pressure
9. Body system that surrounds and protects the body; regulates body temperature
11. Kidneys and the bladder are key parts of this body system