1. How is the effect of a neurotransmitter different from neuromodulator? Give an example of neurotransmitter...
1. How is the effect of a neurotransmitter different from neuromodulator? Give an example of neurotransmitter that is also a neuromodulator.
2.The membrane potential changes relative to RMP during depolarization and hyperpolarization. How do they affect the probability of generating nerve impulses?
Pls. help me with this question
Homework Answers
1.A neurotransmitter is released by the nerve ending of Neuron that is used to communicate with adjacent neuron. They are released by the presynaptic neuron
They are quickly degraded in the synaptic cleft
Examples are Acetylcholine, GABA, Glycine Dopamine
Neuromodulator: They are released by the nerve endings, have their effects sometimes quite far from the neuron which they are released
They are not rapidly degraded or taken up
Examples are enkephalins and endorphins
2.Opening of Na+ channels cause depolarisation of membrane thus membrane potential becomes less negative
Opening of K+ causes hyper polarisation of membrane cause hyperpolarisation
the change in membrane potential lead to the action potential where the depolarisation probability is more compared
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