What is secreted by the parietal cells of gastric glands?

Pepsinogen

Hydrochloric acid

Mucus

Pepsin

Answer and Explanation

The Correct Answer is B

A. Pepsinogen: pepsinogen is secreted by chief cells, not parietal cells.
B. Hydrochloric acid: parietal cells secrete HCl, which acidifies the stomach and helps activate pepsinogen.
C. Mucus: mucus is secreted by mucous (surface) cells to protect the gastric epithelium, not by parietal cells.
D. Pepsin: pepsin is the active protease formed from pepsinogen by HCl; parietal cells secrete HCl, not active pepsin.

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Correct Answer is A

Explanation

A. Large intestine: haustra are sac-like pouches formed by taeniae coli in the large intestine (colon).
B. Pancreas: the pancreas is a glandular organ and does not have haustra.
C. Small intestine: the small intestine has plicae circulares and villi, not haustra.
D. Stomach: the stomach has rugae (folds) but not haustra.

A. Submucosa B. Muscularis C. Mucosa D. Serosa

Correct Answer is C

Explanation

A. Submucosa: submucosa is connective tissue containing blood/lymph vessels and glands, not the epithelial lining.
B. Muscularis: muscularis is smooth muscle (inner circular/outer longitudinal layers) responsible for peristalsis, not epithelial.
C. Mucosa: the mucosa includes the epithelial lining, lamina propria, and may contain folds and mucus-secreting glands (e.g., gastric mucosa).
D. Serosa: serosa is the outermost connective tissue/mesothelial covering of the gut, not the epithelial absorptive/secreting layer.

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What is secreted by the parietal cells of gastric glands?

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Naxlex Comprehensive Predictor Exams

Where are haustra found?

Correct Answer is A

Explanation

Which layer of the digestive tract is composed of epithelial tissue and may contain folds and mucus-secreting glands?

Correct Answer is C

Explanation

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What is secreted by the parietal cells of gastric glands?