| A | B |
|---|
| Removes carbon dioxide from the blood | respiratory system |
| Provides a shield of protection for vital organs such as the brain and heart | skeletal system |
| Movement of the ribs in breathing | muscular system |
| Carries heat from the muscles to the surface of the body for dissipation | cardiovascular system |
| Provides rigid support for the attachment of muscles | skeletal system |
| Transportation of food from the intestines throughout the body | cardiovascular system |
| Disposes of urea, uric acid, and other cellular wastes | urinary system |
| Movements of the arms and legs | skeletal system |
| Helps to maintain normal body temperature by dissipating excess heat | integumentary system |
| Destroys microorganisms once they break through the skin | reticuloendothelial system |
| Phagocytic cells of this system remove bacteria from lymph | lymphatic system |
| Carries messages from receptors to centers of interpretation | nervous system |
| Controls the rate of growth | endocrine system |
| Returns tissue fluid to the blood | lymphatic system |
| Produces various kinds of blood cells | skeletal & cardiovacsular systems |
| Enables the body to adjust to changing internal and external conditions | nervous system |
| Enusres continuity of the species | reproductive system |
| Eliminates excess water from the body | Urinary system |
| Carries hormones from the glands to all tissues | cardiovascular system |
| Acts as a shield against invasion by bacteria | Integumentary system |
| Carries fats from the intestines to the blood | lymphatic system |
| Coordination of all body movements | nervous system |
| Breaks food particles down into small molecules | digestive system |
| Controls the development of the overies and testes | endocrine system |
| Production of spermatozoa and ova | reproductive system |
