| A | B |
|---|
| circulatory system | carries things to and from cells throughout the body |
| respiratory system | brings oxygen into the body and exhales carbon dioxide waste |
| digestive system | breaks food down into nutrients small enough to be absorbed and gets rid of food waste |
| muscular system | is responsible for all the movement in the body |
| skeletal system | provides structure and protection |
| nervous system | sends and receives messages to direct the bodies activities |
| homeostasis | the maintenance of the ideal conditions of the body/cell |
| cell | building block of the body |
| energy reaction | oxygen + fuel -> carbon dioxide + water (+ energy) |
