| A | B |
|---|
| Nervous System | System of the body that recieves and then responds to stimuli |
| Central Nervous System | brain and spinal cord |
| Peripheral Nervous System | all of the other nerves of the body |
| Brain | Major control center of the body |
| Cerebrum | largest section of the brain, controls thinking, responds from stimuli from sense organs, memory |
| Cerebellum | below cerebrum, controls balance and coordination |
| Medulla | Connects brain to spinal cord, controls vital life processes (breathing, heartbeat) and reflexes (swallowing, blinking) |
| Spinal Cord | largest nerve of the body, connects brain with the branch nerves of lower body |
| Neurons | Nerve cells that detect stimuli, send messages(impulses) |
| Sensory neuron | detect stimuli, send impulses |
| Types of neurons | sensory, interneuron, motor neuron |
| Interneuron | connects sensory and motor neurons |
| Motor neuron | produces movement and reactions, connected to a muscle or gland |
| Cell body | center part of cell made of cytoplasm and nucleus |
| Dendrite | short branches, nerve endings that receive stimuli and brings them toward the cell body |
| Axon | long branch, sends messages to next cell, away from the cell body |
| Fatty-coat | covering on an axon for protection |
| Synapse | space between nerve cells where messages is carried over |
| Hormones | Nerve cells release these chemical substances which help the impulse cross the synapse |
| Can brain cells grow back once destroyed to injured? | No |
| Stimulus | any change in the environment |
| Response | what your body does in reaction to a stimulus |
| Nerve | bundle of cell fibers |
| Reflex | Involuntary and automatic response (ex: pulling hand off of hot stove): Skips BRAIN! |
