1/37 Questions
Cholecystokinin (CCK) is a peptide hormone released from cells in the small intestine. It binds to
receptors on:
S cells in the intestinal mucosa
Chief cells in the stomach
Duct epithelial cells pancreas
Ascinar cells in the pancreas
C and d are correct
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Digestive System Quizzes & Trivia
About This Quiz
BMS 300 Exam 4 assesses knowledge on digestive system hormones and enzymes, focusing on
their roles and locations within the human body. It evaluates understanding of biochemical
processes and physiological interactions essential for students in medical and biological
sciences.
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2.
In the mucosa of the stomach, the _____ cell is enriched for carbonic anhydrase and contains
receptors for _____ .
G cell, gastrin
Duct epithelial cell, gastrin
Duct epithelial cell, secretin
Parietal cell, gastrin
Chief, CCK
Correct Answer
A. Parietal cell, gastrin
Explanation
The correct answer is parietal cell, gastrin. Parietal cells in the stomach mucosa are known for
their high concentration of carbonic anhydrase, an enzyme that helps in the production of
gastric acid. Parietal cells also contain receptors for gastrin, a hormone that stimulates the
secretion of gastric acid. This interaction between gastrin and parietal cells plays a crucial role in
the regulation of gastric acid secretion in the stomach.
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3.
In the stomach, the region that is enriched for elastin and permits its expansion is the:
Mucosa
Submucosa
Muscular layer
Serosa
Mesothelium
Correct Answer
A. Submucosa
Explanation
The correct answer is submucosa. The submucosa is a layer of connective tissue in the stomach
that is rich in elastin. Elastin is a protein that allows tissues to stretch and recoil, so the presence
of elastin in the submucosa allows the stomach to expand and accommodate food during
digestion. The other options, such as the mucosa, muscular layer, serosa, and mesothelium, do
, not specifically contain high concentrations of elastin and do not play a significant role in
stomach expansion.
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4.
Which of the following is (are) enzymes that act in the bulk fluid in the lumen of the intestine?
Pancreatic amylase
Trypsin
Carboxy peptidase
Maltase
A and b are correct
Correct Answer
A. A and b are correct
Explanation
Pancreatic amylase and trypsin are enzymes that act in the bulk fluid in the lumen of the
intestine. Pancreatic amylase is responsible for breaking down starch into smaller sugar
molecules, while trypsin helps in the digestion of proteins by breaking them down into smaller