Which of the following epithelium is found in urinary bladder?

Options

A. squamous
B. cuboidal
C. columnar
D. transitiorial

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which type of epithelium is found in the urinary bladder. We need to analyze the options provided: squamous, cuboidal, columnar, and transitional epithelium.

2. **Analyzing Squamous Epithelium**: Squamous epithelium consists of flat cells and is typically found in areas where diffusion and filtration occur, such as the air sacs of the lungs and the lining of blood vessels. It is not suited for the urinary bladder, which requires a different type of epithelium.

3. **Analyzing Cuboidal Epithelium**: Cuboidal epithelium is made up of cube-shaped cells and is found in glands and kidney tubules. Its primary functions are secretion and absorption. This type is also not found in the urinary bladder.

4. **Analyzing Columnar Epithelium**: Columnar epithelium consists of tall, column-like cells and is found in the lining of the digestive tract and respiratory system (e.g., bronchi and uterine tubes). Its functions include secretion and absorption, but it does not line the urinary bladder.

5. **Analyzing Transitional Epithelium**: Transitional epithelium is a type of stratified epithelium that can stretch and contract. It is specifically designed to accommodate the fluctuating volume of liquid in the urinary bladder. This type of epithelium is also known as urothelium and is well-suited for the urinary system.

6. **Conclusion**: Based on the analysis, the type of epithelium found in the urinary bladder is transitional epithelium. Therefore, the correct answer is option 4: transitional.

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