BIOL123 Lecture Notes - Lecture 31: Neuromuscular Junction

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17 Jun 2018

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7.18 Using the neuromuscular junction as an example, describe the presynaptic steps of

synaptic transmission. Explain what happens to the postsynaptic membrane and to

acetylcholine after neurotransmitter release.

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Related Questions

Describe the processes that occur at the neuromuscular junction. How does the permeability of the post-junctional membrane change during synaptic transmission to produce an EPP? How does an EPP at the neuromuscular junction differ from an EPSP?

34. Choose the one(s) that is/are an example of homeostatic control (choose ALL that apply):

		Body temperature
		Energy balance
		Increase in atmospheric pressure
		None is correct

32. Which of the following is TRUE regarding chemical synapses? (Select all that apply.)

		They have gap-junctions
		Vesicles fuse with the presynaptic membrane to release neurotransmitters into the synaptic cleft
		When released from postsynaptic membrane receptors, molecules associated with the neurotransmitter may be returned to the presynaptic cell.
		Neurotransmitter is secreted in the synaptic cleft

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Which of the following molecules plays the most important role in regulating the rate that the glycolysis proceeds?

		Acetyl-CoA.
		Pyruvate.
		Oxygen availability.
		Phosphofructokinase (PFK).
		availability of FAD

3. Inhibiting the enzyme acetylcholinesterase within the neuromuscular junction will result in which of the following?

		Inhibition of the synthesis of neurotransmitter within the neuron.
		Inhibition of the breakdown of neurotransmitter within the synapse.
		Inhibtion of Ca(2+) uptake within the axon terminal
		Inhibition of the activation of the Na+ channels in the postsynaptic membrane.
		Inhibition of the release of neurotransmitter from the presynaptic neuron.

2. You are given the following information: ATP is hydrolyzed and results in the generation of ADP, Pi, and energy (~7.3 kcal/mol). This suggests to you that ______________.

		the reaction requires energy.
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		the reaction is exergonic.
		the reaction does NOT release free energy.
		the reaction cannot be reversed.

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BIOL123 Lecture Notes - Lecture 31: Neuromuscular Junction

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