| A | B |
| Central Nervous System | Made up of the brain and spinal cord. |
| Peripheral Nervous System | Nervous system division that connects the brain to the body. |
| Somatic Nervous System | Subdivision that handles conscious movement. |
| Autonomic Nervous System | Subdivision that handles unconscious movement. |
| Sympathetic Nervous System | Subdivision triggered by life threatening situations. |
| Parasympathetic Nervous System | Subdivision that bring the body back to normal. |
| Epinephrine | Hormone known as adrenaline. |
| Norepinephrine | Hormone released when a human needs additional energy. |
| Axon | Portion of a neuron that carries the message. |
| Dendrites | Portion of a neuron that catches the message. |
| Cell body | ortion of a neuron that contains the nucleus. |
| Terminal Buttons | ortion of a neuron that throws the message. |
| Endocrine System | System in charge of the production and release of hormones. |
| Epinephrine | Hormone released in reaction to a threatening situation. |