| A | B |
|---|
| stimulus | Any change inside or outside your body that brings about a response |
| Neuron | A nerve cell |
| Dendrite | Receives messages and sends them to cell body |
| Axon | Carries messages away from the cell |
| Impulse | Any message carried by a neuron |
| Synapse | Space in between two neurons |
| Three types of neurons | Sensory, Motor Interneurons |
| Central Nervous System | Made up pf the brain and spinal cord |
| Peripheral Nervous System | Made up of all nerves outside of the CNS |
| Sensory neurons | Send impulses from a receptor to the brain or spinal cord |
| Brain | Coordinates all your body activities |
| Brain | Divided into 3 parts: cerebrum, cerebellum & brain stem |
| Cerebrum | Here impulses from senses are interpreted & memory stored |
| Cerebellum | Maintains balance & muscle tone |
| Brain stem | Connects brain to spinal cord |
| Brain stem | Controls your heartbeat, breathing & blood pressure |
| Spinal cord | Carries impulses from all parts of the body to the brain |
| Spinal cord | Carries impulses from the brain to all parts of the body |
| CNS | Is protected by the skull, vertebrae and 3 layers of membranes |
| Peripheral Nervous System | Made up of 12 pairs of cranial nerves and 31 pairs of spinal nerves |
