Examlex
The diffusion of calcium ions into a smooth muscle cell does not depolarize the membrane so no action potential occurs.
User Cost
The cost of using a good or service, which includes the opportunity cost of not using the asset in an alternative use.
Opportunity Cost
The cost of choosing one option over another, typically represented by the benefits that could have been gained by choosing the alternative.
Depletable Resource
A natural resource that can be diminished or exhausted by use, such as fossil fuels, minerals, or forests.
Extraction Cost
The expenses associated with the removal of raw materials from their natural setting for use or sale.
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