Select the First Step for Synaptic Signaling When the Action

question 207

Multiple Choice

Select the first 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 into the synaptic knob.
• C)The neurotransmitter combines with a protein receptor on the subsynaptic membrane.
• D)The permeability is altered in a postsynaptic neuron.
• E)The axon terminal depolarizes.

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Definitions:

Diseconomies Of Scale

Situations where a firm's costs per unit increase as the scale of production increases, typically due to inefficiencies that arise from becoming too large.

Diminishing Returns

A principle stating that if one input in the production of a commodity is increased while other inputs are held fixed, a point will eventually be reached at which additions of the input yield progressively smaller, or diminishing, increases in output.

Diminishing Returns

A principle in economics that states as one input variable is incrementally increased, there comes a point when the rate of resultant output begins to decrease.

Variable Inputs

Inputs, such as labor and materials, whose usage changes according to the level of production.