The Following Are the Steps Involved in Transmission at a Cholinergic

question 49

Multiple Choice

The following are the steps involved in transmission at a cholinergic synapse. What is the correct sequence for these events?
1) Chemically-gated sodium channels on the postsynaptic membrane are activated.
2) Calcium ions enter the synaptic terminal.
3) Acetylcholinesterase hydrolyzes acetylcholine.
4) An action potential depolarizes the synaptic terminal at the presynaptic membrane.
5) The pre-synaptic terminal reabsorbs choline.
6) Acetylcholine is released from storage vesicles by exocytosis.
7) Acetylcholine binds to receptors on the postsynaptic membrane.
8) Calcium ions are removed from the cytoplasm of the pre- synaptic terminal.

• A) 4, 2, 6, 7, 8, 5, 3, 1
• B) 4, 2, 6, 7, 1, 8, 3, 5
• C) 2, 4, 6, 7, 1, 8, 3, 5
• D) 2, 5, 4, 6, 7, 1, 8, 3
• E) 6, 4, 2, 7, 1, 8, 3, 5

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Definitions:

Normal Curve

A symmetrical, bell-shaped curve that represents the distribution of many types of data; most scores fall near the mean, or average, with fewer scores at the extremes.

Standard Deviations

A numerical metric that calculates the degree of spread or distribution of a data set values around the average.

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Normally Distributed

Describes a symmetrical, bell-shaped distribution of data points around the mean, where most observations cluster around the central peak and the probabilities for values further away from the mean taper off equally in both directions.