Multiple Choice
The primary function of the pectoral girdle is to:
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1. Introduction to Anatomy & Physiology
Introduction to Organ Systems
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The prominent ridges in the lining of the empty stomach are called:
A
Haustra
B
Villi
C
Plicae circulares
D
Rugae
Verified step by step guidance1
Understand the anatomy of the stomach: The stomach is a muscular organ involved in digestion. Its inner lining has structures that help accommodate changes in volume and aid in digestion.
Learn the function of rugae: Rugae are prominent ridges or folds in the lining of the stomach. They allow the stomach to expand when food enters and help increase surface area for digestion.
Differentiate rugae from other structures: Haustra are pouches in the large intestine, villi are finger-like projections in the small intestine, and plicae circulares are circular folds in the small intestine. None of these are found in the stomach.
Recognize the empty stomach's appearance: When the stomach is empty, the rugae are more pronounced because the stomach is not stretched by food.
Conclude that the correct answer is rugae based on their anatomical location and function in the stomach lining.
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