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Anatomy of the Stomach Regions

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Questions and Answers

What is the role of parietal cells in the stomach?

Release hormones such as gastrin into the blood
Produce bicarbonate-containing mucus
Secrete pepsinogen and gastric lipase
Secrete intrinsic factor and hydrochloric acid (correct)

Which cell type in gastric glands does not contribute to gastric juices?

Parietal cells
Mucous cells
Chief cells
Endocrine cells (G cells) (correct)

What is the function of the gastroesophageal sphincter?

Release bile into the small intestine
Prevent the reflux of acidic contents from the stomach into the esophagus (correct)
Secrete digestive enzymes into the stomach
Neutralize stomach acid

Which enzyme is responsible for breaking down proteins in the stomach?

<p>Pepsin (A)</p> Signup and view all the answers

What is the main function of mucous cells in the stomach?

<p>Secrete bicarbonate-containing mucus for protection (B)</p> Signup and view all the answers

Flashcards

Intrinsic Factor

Secreted by parietal cells in the stomach; essential for vitamin B12 absorption.

Hydrochloric Acid (HCl)

Produced by parietal cells in the stomach; helps break down food and kill bacteria.

Gastroesophageal Sphincter

Located at the junction of the esophagus and stomach; prevents stomach acid from flowing back up.

Pepsin

A protease enzyme secreted in the stomach; breaks down proteins into smaller peptides.

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Mucous Cells

Mucous cells in the stomach lining; secrete a protective mucus layer.