Which Sphincter Is Composed of Skeletal Muscle Between the Pharynx

question 8

Multiple Choice

Which sphincter is composed of skeletal muscle between the pharynx and esophagus?

• A)pyloric sphincter
• B)upper esophageal sphincter
• C)lower esophageal sphincter
• D)sphincter of Oddi
• E)external anal sphincter

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Definitions:

Market Price

The present cost at which a service or asset is available for purchase or sale.

P > MC

Indicates a situation where the price (P) of a good is greater than the marginal cost (MC) of producing it, suggesting the potential for economic profits.

Short Run

A time period in economics during which at least one factor of production is fixed, limiting the ability of the business to adjust to market changes fully.

Monopolistically Competitive Firm

A type of firm in a market structure where many companies sell products that are similar but not identical, and each has some control over its price.