When Several Inhibitory Postsynaptic Potentials (IPSPs) Arrive at the Axon

question 45

Multiple Choice

When several inhibitory postsynaptic potentials (IPSPs) arrive at the axon hillock rapidly in sequence from a single dendritic location, hyperpolarizing the postsynaptic cell more and more and thus preventing an action potential, this is an example of

• A) temporal summation.
• B) spatial summation.
• C) a normal action potential.
• D) an action potential with an abnormally high peak of depolarization.

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Definitions:

Absorption Costing

An accounting method that includes all manufacturing costs - direct materials, labor, and both variable and fixed overhead - in the cost of a product.

Net Operating Income

An entity’s income after all operating expenses have been deducted from total revenue, excluding taxes and interest charges.

Variable Costing

A costing method in which fixed manufacturing overhead is not assigned to the product, but rather treated as an expense of the period.

Absorption Costing

is an accounting method that includes all manufacturing costs—direct materials, direct labor, and both variable and fixed manufacturing overhead—in the cost of a product.