Electrical Signaling & Synaptic Transmission
Quiz by Rich
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4 questions
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- Q1The influx of what ion is responsible for the generation of an action potential?CalciumChloridePotassiumSodium30s
- Q2Which of the following examples would not meet the criteria to be classified as a neurotransmitter?Glutamate synthesized and released from an AstrocyteLevodopa acting as a dopamine agonist in the setting of Parkinson'sGABA taken up from the synaptic cleft into the presynaptic terminal via GABA transportersA voluntary skeletal muscle contraction as a result of acetycholine release at the neuromuscular junction30s
- Q3Regarding neurotransmitter release, which of the following statements are true?Calcium influx is independent of action potential durationAn action potential causes the opening of ion-gated calciumTermination of neurotransmitter release occurs when sodium channels closeThe delay in neurotransmitter release is associated with the opening of calcium channels30s
- Q4The down-regulation of AMPA receptors on the postsynaptic membrane would result in which of the following?A decreased release of glutamate from the presynaptic terminalAn increased in size of a local potentialAn increased likelihood for the generation of an action potentialA decreased risk for excitotoxicity30s