Atretic follicle is

Options

A. Which are not developed completely and degenerate
B. Other name fo corpus luteum
C. Which extruded its oocytes
D. Graafian follicle

Answer

### Step-by-Step Solution

1. **Understanding Follicles**:
- In the female reproductive system, follicles are structures that contain immature eggs (oocytes). At birth, females have a finite number of follicles, estimated to be around 400,000.

2. **Follicle Development**:
- During a woman's reproductive life, only about 400 of these follicles will mature and release eggs through a process called ovulation. Each month, approximately 20 follicles begin to mature, but typically only one will be ovulated.

3. **Atretic Follicles Defined**:
- The term "atretic follicle" refers to those follicles that do not complete their development and instead degenerate. This degeneration occurs because they are not selected for ovulation.

4. **Characteristics of Atretic Follicles**:
- Atretic follicles are essentially non-functional and are characterized by their incomplete development. They are follicles that have ceased to grow and are undergoing degeneration.

5. **Conclusion**:
- Therefore, the correct answer to the question "Atretic follicle is" would be that atretic follicles are those that are not fully developed and have degenerated.

### Final Answer:
Atretic follicles are those that are not fully developed and have degenerated.

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