The Esophagus Passes Through a Hole in the Diaphragm Called

question 93

Multiple Choice

The esophagus passes through a hole in the diaphragm called the

• A) esophageal hiatus.
• B) cardia.
• C) pylorus.
• D) upper esophageal sphincter.
• E) lower esophageal sphincter.

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Definitions:

Marginal Product

The extra output or benefit received from using one additional unit of a resource.

Opportunity Cost

The cost of an alternative that must be forgone in order to pursue a certain action, the benefits you could have received by taking an alternative action.

Marginal Cost

The cost added by producing one more item of a product, a crucial factor in economic decision-making regarding production levels.

Economic Profit

The difference between a firm’s total revenues and its total costs, including both explicit and implicit costs, representing the actual financial gain.