Terms : Hide Images
| 7489195543 | action potential | A neural impulse; a brief electrical charge that travels down an axon. | 0 | |
| 7489196251 | all-or-none response | a neuron's reaction of either firing or not firing | 1 | |
| 7489196252 | autonomic nervous system | controls involuntary functions | 2 | |
| 7489197263 | axon | fiber that carries impulses away from the cell body of a neuron |  | 3 |
| 7489197264 | axon terminal | endpoint of a neuron where neurotransmitters are stored |  | 4 |
| 7489198194 | central nervous system | brain and spinal cord | 5 | |
| 7489198195 | dendrite | part of a neuron that receives new information |  | 6 |
| 7489198196 | motor neuron (efferent) | transmit impulses from CNS to muscles and glands | 7 | |
| 7489199698 | myelin sheath | covers the axon of some neurons and helps speed neural impulses |  | 8 |
| 7489199699 | neurotransmitter | Chemical messengers | 9 | |
| 7489200604 | nucleus | Control center of the cell | 10 | |
| 7489200605 | parasympathetic nervous system | calms the body, conserving its energy | 11 | |
| 7489201805 | peripheral nervous system | the nervous system outside the brain and spinal cord | 12 | |
| 7489201806 | refractory period | a period of inactivity after a neuron has fired; allows the neuron to recharge; also called repolarization | 13 | |
| 7489202544 | reuptake | a neurotransmitter's reabsorption by the sending neuron | 14 | |
| 7489202545 | sensory neuron (afferent) | transmit impulses from receptors to CNS | 15 | |
| 7489203345 | soma | cell body |  | 16 |
| 7489203346 | somatic nervous system | controls the body's skeletal muscles (voluntary) | 17 | |
| 7489205873 | sympathetic nervous system | activates body during emergency situations (fight or flight response) | 18 | |
| 7489205874 | synapse | junction between nerves | 19 | |
| 7489206700 | threshold | the level of stimulation required to trigger a neural impulse | 20 |
