a) bind to post-synaptic receptors b) are stored in synaptic vesicles are produc
ID: 3522420 • Letter: A
Question
a) bind to post-synaptic receptors b) are stored in synaptic vesicles are produced by all cell types d) (n) and (b) are correct hof the above are correct Explain what is happening in steps 1, 2, 3,4 and 5 below. h- Ut 1 4 3) a) If a neurotransmitter (NT) open a K+ be considered excitatory or inhibitory? Explain.(5 pts) channels in the post-synaptic neuron. Would that NT neuron b) There are neurotransmitters that can be both excitatory and inhibitory. Explain how this is possible. (2 pts) Channls eg to open whither tsExplanation / Answer
a. It would be considered as the Inhibitory neurotransmitter because it opens the K+ channel and leads to membrane hyperpolarization which inhibits generation of an action potential in the postsynaptic cell.
b. When a neurotransmitter binds to its receptor on a receiving cell, it causes ion channels to open or close. This can produce a localized change in the membrane potential—voltage across the membrane—of the receiving cell.
The change makes the target cell more likely to fire its own action potential. In this case, the shift in membrane potential is called an excitatory postsynaptic potential. In other cases, the change makes the target cell less likely to fire an action potential and is called an inhibitory post-synaptic potential.
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