Second meiotic division during oogenesis is completed in

Options

A. Ovary
B. Graafian
C. Fallopian tube
D. Tertiary follicle

Answer

To solve the question regarding when the second meiotic division during oogenesis is completed, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Oogenesis**: Oogenesis is the process of egg (oocyte) development in females. It involves two meiotic divisions: meiosis I and meiosis II.

2. **Completion of Meiosis I**: During oogenesis, the primary oocyte undergoes meiosis I to produce a secondary oocyte and a first polar body. This process occurs in the ovaries, specifically within the ovarian follicles.

3. **Fertilization Trigger**: The secondary oocyte is arrested in metaphase II of meiosis II and will only complete the second meiotic division if fertilization occurs. This means that the second meiotic division is not completed until the sperm fertilizes the egg.

4. **Location of Fertilization**: Fertilization typically occurs in the ampulla region of the fallopian tube. Once the sperm penetrates the secondary oocyte, meiosis II is completed, resulting in the formation of a zygote and a second polar body.

5. **Conclusion**: Since the second meiotic division is completed after fertilization, and fertilization occurs in the fallopian tube, the correct answer to the question is option C: Fallopian tube.

### Final Answer:
C. Fallopian tube