Cholecystokinin decreases stomach motility and inhibits release of gastrin.
Indicate whether this statement is true or false.
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Question 2) A lymphatic capillary within a villus of the small intestine is called a ____________.
Fill in the blank with correct word.
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Question 3) At the pylorus of the stomach, closure of the pyloric sphincter during the multistep process of gastric emptying leads to a reverse current of material; this reverse flow event is known as ___________.
Fill in the blank with correct word.
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Question 4) Gastric mixing changes
A. foodstuffs into bile.
B. food into chyle.
C. a bolus into chyme.
D. chyle into pepsin.
E. proteins into lipids.
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Question 5) Which phase of digestion involves the thought, smell, and sight of food?
A. Gastric phase
B. Cephalic phase
C. Enteric phase
D. Colic phase
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Question 6) Of the five types of secretory cells in the gastric glands, which ones secrete pepsinogen?
A. Chief cells
B. Parietal cells
C. Surface mucous cells
D. Mucous neck cells
E. Enteroendocrine cells
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Question 7) The esophagus
A. secretes digestive enzymes from its mucosa.
B. is located anterior to the trachea.
C. opens to the stomach at the pyloric sphincter.
D. contains both smooth and skeletal muscle fibers.
E. is lined with pseudostratified ciliated columnar epithelium.
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Question 8) The inferior esophageal sphincter is also known as the
A. cardiac sphincter.
B. pyloric sphincter.
C. pharyngoesophageal sphincter.
D. pharyngealgastric sphincter.
E. esophageal hiatus.
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Question 9) Manufacturers of some medications used to treat heartburn advertise that their products shut down the acid-producing pumps in the stomach. Where are these acid-producing pumps? In other words, which type of gastric gland cell secretes acid?
A. Chief cells
B. Parietal cells
C. Mucous neck cells
D. Surface mucous cells
E. Enteroendocrine cells
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Question 10) Stenosis (constriction) of the pyloric sphincter would interfere with
A. passage of bile and pancreatic juice into the duodenum.
B. peristalsis.
C. passage of a bolus into the stomach.
D. passage of chyme into the duodenum.
E. mucus secretion.
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