| A | B |
| axon | sends impulsees away from the cell |
| brain | major organ of nervous system |
| brainstem | connects the cerebrum with the spinal cord |
| central nervous system | contains the brain and spinal cord |
| cerebellum | coordinates movement and muscle activity |
| cerebrum | largest portion of the brain, responsible for receiving and storing information and signally for voluntary movement |
| connecting neuron | carries impulses from one neuron to another |
| dendrites | receives impulses |
| homeostasis | state of balance |
| impulse | electrical signal that is transmitted through nervous system |
| medulla oblongata | part of the brain responsible for all life functions |
| meninges | protective layer covering the brain |
| motor neuron | carries impulses from the brain towards muscles and glands |
| nerve | term for one or more bundles of nerve cells |
| neurotransmitter | chemical substance that allows impulses to travel |
| parasympathetic nervous system | maintains and restores normal body function |
| peripheral nervous system | consists of all nerves that lead to and from the spinal cord and brain |
| sensory neuron | carries impulses towards the brain and spinal cord |
| soma | cell body that contains the nucleus |
| spinal cord | pathway for all impulses going to and from the brain |
| sympathetic nervous system | responsible for stress and emergency responses |
| synapse | space between neurons that contains a neurotransmitter |