| A | B |
|---|
| cerebrum | the larger upper part of the brain, responsible for complex reasoning, thought, language, voluntary movemt, and the initial processing of sensations |
| cerebellum | structure at the back of the brain, controls posture and balance |
| brainstem | directs critical, life-sustaining activities |
| gorilla skeleton | forms a founded arch |
| human skeleton | forms an S curve |
| motor cortex | responsible for controlling the movements of your body |
| sensory cortex | specific area if the cerebrum that is repsonsible for letting you feel sensations from your body |
| neurons | nerve cells |
| stimulus | incoming information that causes the body to respond |
| neurotransmitters | the electrical impulse triggers the release of chemicals |
| synapse | gap between neurons |
| extinction | complete disappearance |
| radioactive isotopes | elements that undergo decay |
| predation | another pressure that many organisms face |
| scientific theory | a hypothesis that already has been extensively tested and is supported by a large body of observations and evidence |
| prokaryote | the bacterial cell is a very simple type of cell |
| eukaryote | more complex type of cell |
| species | organisms that have the greatest number of shared characteristics are grouped together in the category... |
| family | groups of similar genera form a... |
| order | families are organized in a large group known as.. |
| class | orders are grouped together in a... |
| phyla | classes form still larger categories known as... |
| divisions | classes form still larger categories...or for plants as... |
| kingdom | relationships of several organisms from the speiies level to the... level |
| ions | molecules that have an electrical charge |
