Domanda del libro di testo
Mark the following statements as true or false. If a statement is false, correct it to make a true statement.
c. Smooth muscle of the stomach contracts when food enters from the esophagus.
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23. The Digestive System
The Stomach
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Which of the following is NOT a function of the stomach?
A
temporary holding area for food until it can be moved to the duodenum
B
chemical digestion of carbohydrates
C
absorption of a few fat-soluble substances
D
mechanical breakdown of the bolus into chyme
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Understand the primary functions of the stomach: The stomach is primarily involved in the mechanical and chemical digestion of food. It serves as a temporary holding area for food, breaks down food mechanically, and initiates the digestion of proteins.
Identify the processes that occur in the stomach: The stomach uses muscular contractions to mechanically break down food into smaller pieces, forming a semi-liquid mixture called chyme. It also secretes gastric juices containing hydrochloric acid and enzymes like pepsin to chemically digest proteins.
Recognize the substances absorbed by the stomach: While the stomach is not primarily an organ of absorption, it can absorb certain fat-soluble substances, such as alcohol and some medications.
Evaluate the digestion of carbohydrates: Carbohydrate digestion begins in the mouth with salivary amylase and continues in the small intestine. The stomach does not play a significant role in the chemical digestion of carbohydrates.
Determine which function is not associated with the stomach: Based on the understanding of stomach functions, the chemical digestion of carbohydrates is not a function of the stomach, as this process primarily occurs in the mouth and small intestine.
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