Temporal arteritis, also known as giant cell arteritis, is a condition that involves blood vessel inflammation and damage. According to the University of Maryland Medical Center, this condition may affect the medium or large arteries that supply blood to your head, neck, upper body and arms.
Definition of opportunity cost. : the added cost of using resources (as for production or speculative investment) that is the difference between the actual value resulting from such use and that of an alternative (such as another use of the same resources or an investment of equal risk but greater return)
sunk costs: These are costs that were incurred in the past. Sunk costs are irrelevant for decisions, because they cannot be changed. Opportunity cost: The profit foregone by â¦ selecting one alternative over another. It is the net return that could be realized if a resource were put to its next best use.n economics and business decision-making, sunk costs are costs that cannot be recovered once they have been incurred.