NMDA receptor agonists depolarise the lamprey spinal neurons by:Group of answer choicesclosing all calcium channelsopening channels permeable to sodium and calcium ionsopening chloride channelsopening dopamine channelsclosing slow serotonin 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

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 brain stemIn the visual nucleiIn the vestibular nucleiin the ipsilateral spinal cordin the contralateral spinal cord

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 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

Bending the caudal end of the isolated spinal cord affects the locomotor net of the lamprey by:Group of answer choicesactivating the motor neurons directlyactivating ipsilateral inhibitory and contralateral excitatory sensory neuronsactivating contralateral inhibitory and ipsilateral excitatory sensory neuronsinhibiting contralateral excitatory sensory neuronsinhibiting the opposite tilt