Inner wall of urinary bladder is composed of

Options

A. Unstriped muscles
B. Striped muscles
C. Stratified epithelium
D. Transitional epithilium

Answer

To answer the question regarding the composition of the inner wall of the urinary bladder, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Options**: The question provides four options: unstriped muscles, striped muscles, stratified epithelium, and transitional epithelium. We need to analyze each option to determine which one is correct.

2. **Analyzing Unstriped Muscles**:
- Unstriped muscles, also known as involuntary muscles, are found in various internal organs. However, the urinary bladder primarily has voluntary control over its muscles, so this option is not correct.

3. **Analyzing Striped Muscles**:
- Striped muscles are voluntary muscles and are responsible for movements that are under conscious control. While they are present in some parts of the urinary system, the question specifically asks about the inner wall, which is not primarily composed of striped muscles. Therefore, this option is also incorrect.

4. **Analyzing Stratified Epithelium**:
- Stratified epithelium consists of multiple layers of cells and provides protection. However, it is not the type of epithelium found in the urinary bladder. This type of epithelium is more common in areas like the skin and certain glands. Thus, this option is incorrect.

5. **Analyzing Transitional Epithelium**:
- Transitional epithelium, also known as urothelium, is specifically designed to accommodate fluctuations in the volume of liquid in the bladder. It allows the bladder to stretch as it fills with urine and is indeed the type of epithelium that lines the inner wall of the urinary bladder. Therefore, this is the correct answer.

6. **Conclusion**: The inner wall of the urinary bladder is composed of transitional epithelium.

### Final Answer:
The inner wall of the urinary bladder is composed of **transitional epithelium**.

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