| A | B |
|---|
| Integumentary System | Covers and protects body; regulates temperature |
| Skeletal System | Provides body framework and support; protects; attaches muscles to bones; provides calcium storage |
| Muscular System | Produces movement, maintains posture; provides heat |
| Lymphatic System | Returns tissue luid to the blood; defends against disease |
| Digestive System | Ingests and digests food; absorbs nutrients into blood |
| Respiratory System | Exchanges gases between blood and external environment |
| Nervous System | Coordinates body activities; receives and transmits stimuli |
| Endocrine System | Regulates metabolic activities and body chemistry |
| Cardiovascular System | Transports material from one part of the body to another; defends against disease |
| Urinary System | Excretes metabolic wastes; regulates fluid balance and acid-base balance |
| Reproductive System | Forms new individuals to provide continuation of the human species |
