The stomach’s ability to expand is due to:

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Multiple Choice

The stomach’s ability to expand is due to:

Explanation:
The stomach expands because of rugae. These are folds of mucosa (and submucosa) that line the stomach. When the stomach is empty, the rugae are prominent; as you eat and the stomach fills, the folds unfold and the walls stretch, allowing a large increase in volume without a big rise in pressure. Villi and microvilli are structures that increase surface area for absorption in the small intestine, not for stomach distension. Haustra are pouch-like segments in the colon, not involved in stomach expansion.

The stomach expands because of rugae. These are folds of mucosa (and submucosa) that line the stomach. When the stomach is empty, the rugae are prominent; as you eat and the stomach fills, the folds unfold and the walls stretch, allowing a large increase in volume without a big rise in pressure. Villi and microvilli are structures that increase surface area for absorption in the small intestine, not for stomach distension. Haustra are pouch-like segments in the colon, not involved in stomach expansion.

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