Secondary oocyte formation occurs in

Options

A. Secondary follicle
B. Graafian follicle
C. Fallopaians tube
D. Uterus

Answer

To answer the question "Secondary oocyte formation occurs in," we will go through the process of oogenesis step by step.

### Step-by-Step Solution:

1. **Understanding Oogenesis**: Oogenesis is the process of formation of the ovum (egg) in females. It begins during embryonic development and continues until puberty.

**Hint**: Oogenesis is the key term related to the formation of the egg.

2. **Primordial Follicles**: At birth, females have about 400,000 primordial follicles in their ovaries. These follicles contain primary oocytes.

**Hint**: Remember that primordial follicles are the starting point for oocyte development.

3. **Arrested Development**: The primary oocytes remain arrested in the prophase stage of meiosis until puberty. They do not undergo further division during this time.

**Hint**: The term "arrested" indicates that the primary oocytes are not actively dividing.

4. **Puberty and Follicle Maturation**: Upon reaching puberty, some primary follicles mature into secondary follicles. This maturation leads to the formation of Graafian follicles.

**Hint**: Puberty triggers the maturation of follicles.

5. **Formation of Secondary Oocyte**: The secondary oocyte is formed during the second meiotic division, which occurs within the Graafian follicle. The Graafian follicle is the mature follicle that contains the secondary oocyte.

**Hint**: The Graafian follicle is crucial for the formation of the secondary oocyte.

6. **Identifying the Correct Answer**: Since the question asks where secondary oocyte formation occurs, the correct answer is the Graafian follicle, which is located in the ovary.

**Hint**: Focus on the location of the Graafian follicle when considering where secondary oocyte formation takes place.

### Conclusion:
The secondary oocyte formation occurs in the **Graafian follicle** within the ovary.