| A | B |
|---|
| makes chemical messengers (hormones) | endocrine |
| endocrine | controls from a distance using chemicals |
| nervous | processes information from sensory organs |
| controls and coordinates balance & movement | nervous |
| excretory | filters metabolic waste from blood |
| eliminates metabolic waste from circulatory | excretory |
| muscular | causes movements by "contracting" (shortening) |
| attachs to skeleton to cause movements | muscular |
| skeletal | provides structure & support for body |
| protects vital organs; muscle attachment sites | skeletal |
| respiratory | allows oxygen into blood & carbon dioxide out |
| increases oxygen level; decreases carbon dioxide | respiratory |
| circulatory system | includes vascular tissue |
| vascular tissue | tubes for transporting things |
| transports stuff throughout body | circulatory system |
