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16 Questions

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PHY L3C | GI Secretions

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Questions and Answers

What is the main function of saliva in the digestive process?

Neutralization of gastric acid

Cleansing of the stomach lining

Facilitation of taste (correct)

Initiation of protein digestion

Which of the following is a paracrine regulator of acid secretion in the stomach?

Secretin

Histamine (correct)

Somatostatin

Gastrin

What are the effects of acid, fat, and solutions of high osmolarity in the duodenum on gastric secretion?

Stimulation of gastric secretion

No effect on gastric secretion

Increase in enzyme secretion only

Inhibition of gastric secretion (correct)

What is the function of somatostatin as a paracrine regulator of acid secretion in the stomach?

Inhibition of acid secretion Signup and view all the answers

What is the main function of bile salts in the small intestine?

To emulsify dietary lipids Signup and view all the answers

Which of the following is NOT a function of saliva?

Absorption of vitamins Signup and view all the answers

What is the effect of vagal activation on parietal cells in the stomach?

Stimulation of HCl secretion Signup and view all the answers

Which cell type releases histamine to induce HCl secretion in the stomach?

Enterochromaffin-like (ECL) cells Signup and view all the answers

What is the main function of intrinsic factor in the stomach?

Absorption of vitamin B12 Signup and view all the answers

What is the primary role of myoepithelial cells in salivary glands?

Contract and eject saliva Signup and view all the answers

What is the function of lysozyme found in saliva?

Protection against bacteria Signup and view all the answers

During which phase is HCl secretion in the stomach primarily stimulated by distention and the presence of protein and amino acids?

Gastric phase Signup and view all the answers

PHY L3C | GI Secretions

Choose a study mode

Podcast

Questions and Answers

What is the main function of saliva in the digestive process?

Which of the following is a paracrine regulator of acid secretion in the stomach?

What are the effects of acid, fat, and solutions of high osmolarity in the duodenum on gastric secretion?

What is the function of somatostatin as a paracrine regulator of acid secretion in the stomach?

What is the main function of bile salts in the small intestine?

Which of the following is NOT a function of saliva?

What is the effect of vagal activation on parietal cells in the stomach?

Which cell type releases histamine to induce HCl secretion in the stomach?

What is the main function of intrinsic factor in the stomach?

What is the primary role of myoepithelial cells in salivary glands?

What is the function of lysozyme found in saliva?

During which phase is HCl secretion in the stomach primarily stimulated by distention and the presence of protein and amino acids?

Which structure stores bile during interdigestive periods and aids in its concentration?

What is the primary role of bile salts in the small intestine?

Which component is NOT part of the organic constituents of bile?

What is the main function of mucus in the stomach?

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