Multiple Choice
Which of the following correctly lists the layers of the gastric wall from innermost to outermost, along with a structure found in the lining of the stomach?
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23. The Digestive System
Introduction to the Digestive System
Multiple Choice
In the digestive system, what is chyme?
A
A bile pigment produced by the liver that gives feces its brown color
B
An enzyme secreted by the pancreas that breaks down triglycerides in the small intestine
C
A hormone released by the stomach that stimulates acid secretion and gastric motility
D
A semifluid mixture of partially digested food and gastric secretions produced in the stomach and delivered to the small intestine
Verified step by step guidance1
Step 1: Understand the context of the digestive system and the role of different substances involved in digestion, such as bile pigments, enzymes, hormones, and digestive mixtures.
Step 2: Identify what chyme is by recalling that it is not a pigment, enzyme, or hormone, but rather a physical mixture formed during digestion.
Step 3: Recognize that chyme is the semifluid mixture created in the stomach when food is combined with gastric secretions, including acid and enzymes, to begin the digestion process.
Step 4: Note that chyme is then delivered from the stomach into the small intestine, where further digestion and nutrient absorption occur.
Step 5: Conclude that chyme is best described as the semifluid mixture of partially digested food and gastric secretions produced in the stomach and passed to the small intestine.
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