PSB-2000 Study Guide - Final Guide: Inhibitory Postsynaptic Potential, Electrical Synapse, Chemical Synapse

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20 Nov 2013
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Name the parts of neurons that enable this specialization. When they become to depolarized (same on the inside and outside), na+ rushes in and causes action potential. Chemical synapses and receptors (lecture 6-7; 5 questions) Differs from electrical because chem is between multiple cells while electrical is between 1 neuron. For chemical the electrical synapse is reconfigured to move across the synaptic cleft. Integration of neural signals (lecture 8; 2 questions: define and give examples of temporal and spatial summation. Temporal summation: recurrent small stimulation to the same place. Results from influx of chloride ions or efflux of potassium. Decreases probability of an action potential: are psps graded or do they follow the all-or-none law? graded. Describe in what ways drugs can act at receptors in order to mimic or block natural neurotransmitter action (e. g. , serve as agonists or antagonists be prepared for examples). Efficacy: how well a drug activates a receptor.