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Anatomy of the Digestive System

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Questions and Answers

What is the primary source of pepsin in gastric juice?

Parietal cells

Lymphocytes

Chief cells (correct)

Enteroendocrine cells

What is the function of intrinsic factor in gastric juice?

To break down proteins into peptides

To regulate the pH of the stomach

To stimulate the release of gastrin

To bind to vitamin B12 (correct)

Which type of cell is responsible for producing gastrin and other hormones?

Parietal cells

Enteroendocrine cells (correct)

Lymphocytes

Chief cells

What is the main function of the vagus nerve in regulating gastric secretion?

To stimulate the release of hydrochloric acid Signup and view all the answers

What is the primary location of lymphoid cells and nodules in the stomach?

In the lamina propria Signup and view all the answers

What is the function of smooth muscle fibers in the stomach?

To contract and mix food with gastric juice Signup and view all the answers

What is the primary component of gastric juice that breaks down proteins?

Pepsin Signup and view all the answers

What is the primary function of the lamina propria in the stomach?

To house lymphoid cells and nodules Signup and view all the answers

What is the primary hormone that regulates the release of hydrochloric acid in gastric juice?

Gastrin Signup and view all the answers

What is the primary function of parietal cells in the stomach?

To produce hydrochloric acid Signup and view all the answers