| A | B |
|---|
| homeostasis | a condition in which an organism maintains a relatively stable internal environment |
| skeletal system | the system that provides a framework to support the body and movement, protect internal organs, and produces red blood cells |
| muscular system | the system that works with the skeletal system to produce movement includes voluntary and involuntary types |
| respiratory system | the system that brings oxygen to the body and removes carbon dioxide |
| digestive system | the system that breaks down food & changes it to energy & materials that the body uses |
| urinary systen (excretory) | the system that disposes of the body's waste products |
| circulatory system | the system that carries oxygen rich blood and nutrients to the cells and removes wastes from cells |
| immune system | the system that provides protection against disease-causing agents |
| nervous system | the system that regulates the body's responses to internal and external stimuli |
| endocrine system | the system that controls body conditions with the use of chemicals |
