The Negative Feedback Control of HCl Secretion in the Gastric

question 113

Multiple Choice

The negative feedback control of HCl secretion in the gastric phase of gastric regulation is mainly by

• A)decline in gastrin secretion.
• B)increase in gastrin secretion.
• C)increase in somatostatin secretion.
• D)Both decrease in gastrin secretion and increase in somatostatin secretion.

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Definitions:

Marginal Revenue

The extra revenue generated by the sale of an additional unit of a product or service.

Marginal Cost

The expense incurred in manufacturing an extra unit of a product or service.

Economic Profits

The difference between total revenue and total costs, including both explicit and implicit costs, indicating excess over the opportunity cost.

Minimum Average Total Cost

The lowest point on the curve that shows the average cost of producing each unit of output when all input costs are considered over various output levels.