| A | B |
|---|
| Cerebrum | Controls thinking, speaking, hearing, senses and thoughts |
| Cerebellum | Controls balance and muscle activities |
| Medulla | Controls involuntary actions |
| Dendrite | Carries messages to the cell body |
| Axon | Carries messages away from the cell body |
| Synapse | Gap between neurons; site of chemical impulse |
| Neuron | Threadlike message carrier |
| Sensory Neuron | Receives messages from receptors; takes messages to interneurons |
| Interneuron | Connects sensory and motor neurons |
| Motor Neurons | Carries messages from brain to effectors |
| Nerve Impulse | Electrical and Chemical signals |
| Effector | Stimulated by motor neurons; carries out job from brain |
| Receptor | Receives messages from environment; sends message to sensory neurons |
| Peripheral Nervous System | Made up of pairs of nerves |
| Central Nervous System | Made up of the brain and spinal cord |
| Neuron parts | Dentrite, Cell Body, Axon |
