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
Question
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
Solution
The release of endogenous serotonin (5-HT) in the lamprey spinal cord leads to an increase in the frequency of cyclic oscillations of the spinal locomotor network.
Here's a step-by-step explanation:
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Serotonin, or 5-HT, is a neurotransmitter that plays a crucial role in the modulation of various physiological processes, including mood, appetite, and sleep. It also plays a significant role in the regulation of motor functions.
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In the lamprey spinal cord, serotonin is released from the brainstem and diffuses to the spinal cord.
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Once in the spinal cord, serotonin binds to its receptors on the neurons of the spinal locomotor network. This network is responsible for generating rhythmic motor patterns, such as those involved in locomotion.
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The binding of serotonin to its receptors triggers a series of intracellular events that ultimately lead to an increase in the frequency of cyclic oscillations of the spinal locomotor network.
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This increase in frequency enhances the rhythmic motor patterns generated by the spinal locomotor network, thereby facilitating locomotion.
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Therefore, the release of endogenous serotonin in the lamprey spinal cord leads
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