| A | B |
|---|
| cell | basic structural unit that makes up the body |
| tissues | organized group of cells that work together |
| organ | groups of tissue that do as specific function or job |
| organ system | group of organs working together to do a special job |
| homeostasis | keeping everything the same inside(maintaining) outside things change |
| nervous system | a complex system that carries messages to and from the brain and spinal chord to other parts of the body |
| CNS | central nervous system |
| Central nervous system | brain and the spinal chord |
| PNS | peripheral nervous system |
| Peripheral Nervous system | carries information from your arms and legs to your CNS, and regulates the heart, digestion and breathing |
| Brain | in the skull and is shaped like a mushroom, has nerve cells called neurons, adult brain weighs 3 pounds |
| neuron | basic unit in the nervous system found in the brain, can get and send messages |
| spinal chord | long tube like structure that starts at the brain. It is about 44 centimeters long, is inside the vertebral column(back bone) |
| CSF | Cerebral spinal fluid |
| Cerebral spinal fluid | moves around the brain and spinal chord to protect them and nourish(feeds) them |
| Brain Stem | controls basic body functions breathing , swallowing, heart rate and blood pressure |
| Cerebellum | controls balance and coordination |
| Cerebrum | most of the brain |
| corpus callosum | connects the right and left sides of the brain |
| hemisphere | one of the two sides of the brain |
