In-Text Figure Based Questions

question 159

Multiple Choice

In-Text Figure Based Questions
-Why do circular muscles contract behind the bolus while longitudinal muscles contract ahead of the bolus?(Figure 24-4)

• A) Circular muscles contract behind the bolus to close the sphincters while longitudinal muscles contract ahead of the bolus to open the sphincters.
• B) Circular muscles contract behind the bolus to open the sphincters while longitudinal muscles contract ahead of the bolus to close the sphincters.
• C) Circular muscles contract behind the bolus to push the bolus forward while longitudinal muscles contract ahead of the bolus to shorten that segment of the digestive tract.
• D) Circular muscles contract behind the bolus to shorten that segment of the digestive tract while longitudinal muscles contract ahead of the bolus to push the bolus forward.
• E) Circular muscles contract behind the bolus to mix the contents while longitudinal muscles contract ahead of the bolus to activate stretch receptors in the wall of the digestive tract.

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Definitions:

Consumption Possibilities

The range of goods and services that can be consumed given a consumer's income and prevailing prices.

International Trade

The exchange of goods and services across international boundaries or territories, involving the import and export of products.

Opportunity Cost

The worth of the best alternative that is given up in order to make a choice.

Imports

Products or services imported from other countries for sale or consumption.