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

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

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

Oscillations of spinal neurons that generate the rhythmic movements are due toGroup of answer choicesconditional pacemakers in some interneuronsrhythmic locomotor centre in the midbrainconditional pacemakers in sensory neuronspacemaker potentials in motor neuronsrhythmic synaptic inputs from the cortex PreviousNext

Oscillations in the conditional pacemakers in the lamprey spinal cord involve  Chloride channels and sodium channels   Calcium channels and barium channels   Potassium channels and barium channels   Sodium channels and calcium channels   Potassium channels and chloride channels

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