Identify the odd one from the following

Options

A. labia minora
B. fimbriae
C. infundibulum
D. Isthmus

Explanation

To solve the question of identifying the odd one out from the given options: labia minora, fimbrae, infundibulum, and isthmus, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Options**:
- **Labia Minora**: This is part of the female external genitalia.
- **Fimbrae**: These are finger-like projections located at the end of the fallopian tube (oviduct).
- **Infundibulum**: This is the funnel-shaped part of the fallopian tube that is closest to the ovary.
- **Isthmus**: This is the narrow part of the fallopian tube that connects to the uterus.

2. **Categorize the Options**:
- **Female Reproductive System Components**: Fimbrae, infundibulum, and isthmus are all parts of the fallopian tube (oviduct), which is involved in the female reproductive system.
- **External Genitalia**: Labia minora is not a part of the internal reproductive system but is instead part of the external genitalia.

3. **Identify the Odd One Out**:
- Since labia minora is the only option that is part of the external genitalia and not part of the internal reproductive structures (like the fallopian tube), it stands out as the odd one.

4. **Conclusion**:
- The odd one out is **labia minora** (Option 1).

### Final Answer:
The correct answer is **labia minora**.

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