NR546 Quiz reviews - Weekly Quiz review! 100% CORRECT ANSWERS

NR546 Quiz reviews - Weekly Quiz review Propagation of an action potential to the axon terminal is mediated by voltage-sensitive sodium channels. Influx of sodium through voltage-sensitive sodium channels at the axon terminal leads to opening of voltage-sensitive calcium channels, also at the axon terminal. Influx of calcium through the open voltage sensitive calcium channels leads to docking of synaptic vesicles and secretion of neurotransmitter into the synapse.Agonists cause ligand-gated ion channels to open more frequently.The communication between neurons at synapses is mediated by neurotransmitter molecules and is therefore chemical. Stahl p. 6Transcription factors are proteins that bind to promoter sequences of DNA to turn gene expression on and cal neurotransmission is the foundation of psychopharmacologyNR546 Week 3EPSs manifest when dopamine receptor occupancy within the basal ganglia reaches approximately 80% as the dopamine-mediated inhibition of movement is now disinhibited (Refer to pathophysiology and the basal ganglia model of movement)Stahl p.133 . See figure 5-4