Why Is It Not Normally Possible for Action Potentials in the Postsynaptic

question 40

Multiple Choice

Why is it not normally possible for action potentials in the postsynaptic neuron to produce an action potential in the presynaptic neuron?

• A) because the axon terminals of presynaptic neurons have no acetylcholine receptors
• B) because the presynaptic neurons do not have a resting membrane potential
• C) because the synaptic cleft allows the diffusion of acetylcholine in one direction only
• D) because the synaptic vesicles in the postsynaptic terminal are inactive
• E) both because the presynaptic neurons do not have a resting membrane potential and because the synaptic cleft allows the diffusion of acetylcholine in one direction only

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Identify techniques that are not effective in reducing pain.

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Definitions:

Pilot Study

A small-scale preliminary study conducted to evaluate feasibility, duration, cost, and adverse events in preparation for a full-scale research project.

Observation

The action or process of closely monitoring or noting phenomena or behaviors to gather information.

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Direct Arrangement

A method of organization where information is presented in a straightforward, linear order, often used in writing or speech to clearly convey a message.