At which stage of the development, ovum is released from the ovary of human female?

Options

A. Primary oocyte
B. Oogonium
C. Secondary oocyte
D. Ootid

Answer

To determine at which stage of development the ovum is released from the ovary of a human female, we need to understand the process of oogenesis, which is the development of the ovum.

### Step-by-Step Solution:

1. **Understanding Oogenesis**: Oogenesis is the process by which the female gametes (ova) are produced in the ovaries. It involves several stages of development.

2. **Stages of Oogenesis**:
- **Oogonium**: This is the initial stage, a diploid cell that undergoes mitosis to produce primary oocytes.
- **Primary Oocyte**: This is the next stage, which is also diploid. It undergoes meiosis but is arrested in prophase I until puberty.
- **Secondary Oocyte**: This is formed when the primary oocyte completes the first meiotic division. It is haploid and is the stage at which the ovum is released from the ovary.
- **Ootid**: This is the stage after the secondary oocyte completes the second meiotic division, but this occurs after the ovum has been released.

3. **Release of the Ovum**: The ovum is released from the ovary during ovulation, which occurs when the secondary oocyte is formed. Therefore, the correct answer to the question is the secondary oocyte.

4. **Conclusion**: The ovum is released from the ovary at the stage of the secondary oocyte.

### Final Answer:
The ovum is released from the ovary at the stage of the **secondary oocyte**.

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