Select the Last Step for Synaptic Signaling When the Action

question 92

Multiple Choice

Select the last step for synaptic signaling when the action potential arrives at the axon terminal of a presynaptic neuron.

• A) A neurotransmitter is released by exocytosis.
• B) Calcium flows in the synaptic knob.
• C) The neurotransmitter combines with protein receptor sites on the subsynaptic membrane.
• D) The permeability is altered in a postsynaptic neuron.
• E) None of these.

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Definitions:

Zero Economic Profits

A condition where a firm covers all its opportunity costs perfectly, making no extra returns above these costs.

ATC Curves

Graphical representations showing the average total cost of production at different levels of output.

Demand Curve

A graph that illustrates the relationship between the price of a good or service and the quantity demanded by consumers at various prices, typically sloping downward from left to right.

Cost Functions

Mathematical relationships that express how a firm’s costs depend on the quantity of output it produces.