Question 11Tips1 ptsOscillations in the conditional pacemakers in the lamprey spinal cord involveGroup of answer choicesSodium channels and calcium channelsPotassium channels and barium channelsChloride channels and sodium channelsPotassium channels and chloride channelsCalcium channels and barium channels PreviousNext

Question 141 ptsIntracellular recordings from conditional pacemaker neurons in isolated lamprey spinal cord/brainstem preparations show:Group of answer choicesspontaneous action potentials triggered at resting membrane potentialslow oscillations of membrane potential with superimposed fast action potentialsslow oscillations of membrane potential in the absence of any neural or pharmacological excitationserotonin-mediated inhibitory synaptic potentialsslow oscillations driven by GABA-A mediated synaptic input with superimposed action potentials PreviousNext

Question 71 ptsRelease of endogenous serotonin (5-HT) in the lamprey spinal cord leads to:Group of answer choicespartial inhibition of action potential generation in motor neuronsinhibition of calcium-dependent potassium channels in the conditional pacemaker neuronsstimulation of the calcium-dependent potassium channels in the conditional pacemaker neuronsan increase in the frequency of cyclic oscillations of the spinal locomotor networkinhibition of NMDA-receptors on spinal neurons PreviousNext

Conditional pacemaker neurons in the lamprey are:Group of answer choicesneurons that are synaptically driven by other pacemaker cellsneurons that have spontaneous activity when they receive inhibitory synaptic inputneurons whose membrane potential oscillates in the presence of glutamateneurons whose membrane potential oscillates when they receive sensory inputneurons whose membrane potential oscillates without any input

The source of endogenous glutamate that initiates oscillations in the conditional pacemaker neurons of the lamprey spinal cord is:Group of answer choicesmotor neuronsdopamine-releasing neurons in the basal gangliavestibular nucleisensory neuronsneurons projecting from the brain stem

Where are the cell bodies of the neurons that cause NMDA receptor activation to the conditional pacemakers in the spinal circuits of the intact Lamprey during swimmingGroup of answer choicesIn the visual nucleiin the ipsilateral spinal cordIn the brain stemin the contralateral spinal cordIn the vestibular nuclei PreviousNext