| A | B |
|---|
| Gray matter | Collections of nerve cell bodies and their associated neuroglia |
| White matter | Bundles of parallel axons and their sheaths |
| Decussation | A crossing over |
| Vital functions | Those functions of the body necessary for life on a short-term basis |
| Commissures | Connections of nerve fibers which allow the two hemispheres of the brain to communicate with one another |
| Hypoxia | A condition in which the brain is not getting enough oxygen due to a poor blood supply |
| Hypoglycemia | A condition in which the glucose levels in the blood get too low |
| The three sections of the brainstem | The pons, the medulla, and the midbrain |
| These structures are part of the diencephalon | The hypothalamus and the thalamus |
| This structure relays messages from the cerebrum to the cerebellum | The pons |
| This structure controls the pituitary gland | The hypothalamus |
| This structure performs a crude interpretation of sensory information and then relays that information to the cerebrum | The thalamus |
| This structure deals with subconscious motor functions | The cerebellum |
| This structure allows the two hemispheres of the brain to communicate with each other | The corpus callosum |
