Gall bladder is lined by
**Core Concept**
The gallbladder is an organ that stores bile from the liver, playing a crucial role in digestion. Its lining is specialized to facilitate the concentration and storage of bile. The **mucosa** of the gallbladder is composed of a specific type of epithelial lining.
**Why the Correct Answer is Right**
The correct answer is related to the type of epithelium that lines the gallbladder, which is **simple columnar epithelium**. This type of lining is specialized for absorption and secretion, allowing the gallbladder to concentrate bile by removing excess water and electrolytes. The **simple columnar epithelium** is well-suited for these functions.
**Why Each Wrong Option is Incorrect**
**Option A:** Is incorrect because it does not accurately describe the lining of the gallbladder.
**Option B:** Is also incorrect as it is not the type of epithelium found in the gallbladder.
**Option D:** Is incorrect because the gallbladder's lining does not match this description.
**Clinical Pearl / High-Yield Fact**
The lining of the gallbladder is crucial for its function in concentrating bile. Understanding the type of epithelium and its functions can help in diagnosing and managing gallbladder diseases.
**Correct Answer:** D. Simple columnar epithelium.