PSYCH 100 Lecture Notes - Schizophrenia, Acetylcholine, Dendrite

• School: UMASS-Amherst
• Department: Psychology & Brain Sciences
• Course: PSYCH 100
• Professor: tamararahhal

Document Summary

Dendrite the in-box it receives signals from: sensory structures (like taste buds, b) other neurons. Axon the out-box : it sends signals to: other neurons, b) effector cells (muscles) Myelin sheath a fatty substance that encases the axons of some cells. Terminal vesicles ( buttons ) stores and eventually releases enzymes called neurotransmitters (nt). Synapse a small space between the acons of one cell and the dendrites of the next cell. Receptor sites locations on the dendrite of the next neuron; nts bind to receptor sites and the whole process begins anew. Refractory period: brief period when the neuron is unable to fire again. Reuptake occurs: express neurotransmitters are taken back for reuse in the axon of the neuron that released them. Drugs can have two effects: agonists: mimic the action of the neurotransmitter. Counteracts enzymes that clean out synapse: antagonists: block the action of the neurotransmitter. Specialized for different sensations: motor neurons (efferent)