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Module 4 Psych
| Term | Definition |
|---|---|
| Neuroplasticity: | is the brain's ability to change, most notably during childhood. Takes longer in adulthood. Can build pathways from experience |
| Neurons: | of nervous system are called Neurons |
| Cell Body: | contains nucleus is life center |
| Dendrites | Branching extensions that receive and integrate messages sending them to cell body |
| Axon | segmented neuron extension that passes messages TO other neurons or to muscles/glands |
| Myelin Sheath: | Is Fatty tissue layer segmentally encasing axon speeds up neural impulses |
| Gilal Cells: | support nourish and protect neurons |
| Refractory Period: | is period of inactivity after a neuron fires (Action Potential) |
| Threshold: | is level of stimulation required for action potential/neural impulse (Action Potential) |
| All or none response: | Neuron's reaction of either firing or not firing (Action Potential) |
| Synapse: | is the space between axon tip of sending neuron and the dendrite of the receiving neuron (How Neurons communicate) |
| Neurotransmitters: | are chemical messengers that influence whether neuron will fire (How Neurons communicate) |
| Nerves: | are bundled axons that form neural cables that connect CNS to our muscles, glands, and sensory organs. (Nervous system key terms) |
| Sensory Neurons: | carry incoming information from body tissues and sensory receptors to the brain and spinal cord. (Nervous system key terms) |
| Reflexes: | are simple automatic responses to a sensory stimulus. Some reactions happen before information makes it to your brain part of central nervous system |
| Agonist: | increases a neurotransmitters action (How Neurons Communicate) |
| Antagonist: | which decreases a Neurotransmitter action. (How Neurons Communicate |
| Endorphins: | Natural, opiate-like Neurotransmitters linked to pain control and pleasure. (How Neurons Communicate) |
| Motor Neurons: | carry outgoing information from the brain and spinal cord to the muscles and glands (nervous system key terms) |
| Interneurons: | within the brain and spinal cord; process information between sensory and motor neurons. (nervous system key terms) |
| Brain: | is a neural network of individual neurons is part of central nervous system |
| Spinal Cord: | Is part of the central nervous system connects PNS to the brain |
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OB'sStudySess28
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