| A | B |
|---|
| Neuron | Nerve cells that carry impulses throughout the body. |
| Dendrite | Th portion of a neuron that recieves messages and sends them to the cell body. |
| Axon | The part of the neuron that carries messages away fom the cell body. |
| Sensory Neurons | Nerve cells that transmit simuli from receptors to the brain or spinal cord. |
| Interneurons | Nerve cells throughout the brain and spinal cord that transmit impulses from sensory neurons to motor neurons. |
| Motor Neurons | Nerve cells that conduct impulses from the brain or spinal cord to musles or glands throughout the body. |
| Synapse | The small space between two neurons across which impulses can travel. |
| Central Nervous System | Part of the body's control system, including the brain and spinal cord. |
| Peripheral Nervous System | Part of the nervous system, including cranial canal nerves and and spinal nerves that connect the brain and spinal cord to other body parts. |
| Cerebrum | The largest of the three parts of the brain; interprets impulses from sences, stores memory, and controls voluntary muscles. |
| Cerebellum | The part of the brain that coordinates muscle movements. |
| Brainstem | The part of the brain extending from the cerebrum to the spinal cord; controls involuntary muscle movements. |
| Reflex | A type of innate behavior that is an automatic response to stimulus; not involving the brain. |
