Which Step Is Not Part of the Sequence of Events

question 9

Multiple Choice

Which step is not part of the sequence of events that triggers synaptic transmission from a neuron to a muscle fiber?

• A) Entry of Ca²⁺ into the presynaptic terminal
• B) Release of norepinephrine into the synaptic cleft
• C) Opening of Ca²⁺ channels in the presynaptic terminal
• D) Arrival of an action potential at the presynaptic terminal
• E) Fusion of synaptic vesicles with the presynaptic membrane

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Definitions:

Curves

In various contexts, it refers to graphical representations that show a relationship between two or more variables or factors.

L-shaped Isoquant

A graphical representation in production theory showing combinations of input factors that yield the same output, where the shape indicates perfect substitutability between inputs up to a point, followed by no substitutability.

Perfect Substitutes

Goods or services that can be used in exact place of each other with no loss of utility to the consumer, often characterized by a constant marginal rate of substitution.

Production

The process of creating goods or services by combining various inputs like labor, raw materials, and machinery.