Which layer of the intestinal wall contains enterocytes with microvilli?

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Prepare for the Leaving Certificate Digestion Test with engaging questions and explanations. Ready yourself with multiple choice quizzes, hints, and deep insights. Be exam-ready now!

Multiple Choice

Which layer of the intestinal wall contains enterocytes with microvilli?

Explanation:
The mucosa. The inner lining of the intestine houses the epithelium where enterocytes sit; these absorptive cells have microvilli on their apical surface, forming the brush border that greatly increases surface area for nutrient absorption. The submucosa is a connective-tissue layer with vessels and nerves, the muscularis externa provides movement with its muscle layers, and the serosa is the outer covering. So enterocytes with microvilli are a feature of the mucosal epithelium.

The mucosa. The inner lining of the intestine houses the epithelium where enterocytes sit; these absorptive cells have microvilli on their apical surface, forming the brush border that greatly increases surface area for nutrient absorption. The submucosa is a connective-tissue layer with vessels and nerves, the muscularis externa provides movement with its muscle layers, and the serosa is the outer covering. So enterocytes with microvilli are a feature of the mucosal epithelium.

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