Corpus luteum develops from

Options

A. Oocyte
B. Nephrostome
C. Graafian follicle
D. Antrum

Answer

**Step-by-Step Solution:**

1. **Understanding the Female Reproductive System**: The female reproductive system includes structures such as ovaries, fallopian tubes, and the uterus. The ovaries are responsible for producing eggs (ova) and hormones.

2. **Identifying the Graafian Follicle**: The Graafian follicle is a mature ovarian follicle that contains a mature ovum (egg). It is a fluid-filled cyst that forms in the ovary during the menstrual cycle.

3. **Ovulation Process**: During ovulation, the mature ovum is released from the Graafian follicle into the fallopian tube. This is a critical step in the reproductive process.

4. **Formation of Corpus Luteum**: After the ovum is released, the remaining cells of the Graafian follicle undergo a transformation. The lining of the Graafian follicle grows inward and fills with a yellow substance, forming the corpus luteum, also known as the "yellow body."

5. **Function of Corpus Luteum**: The corpus luteum functions as an endocrine tissue, secreting hormones such as estrogen and progesterone. These hormones play vital roles in preparing the uterus for potential implantation of a fertilized egg and preventing further ovulation during the menstrual cycle.

6. **Degeneration of Corpus Luteum**: If fertilization does not occur within approximately 14 days, the corpus luteum degenerates and is eventually shed during menstruation.

7. **Conclusion**: Therefore, the corpus luteum develops from the Graafian follicle after ovulation.

**Final Answer**: The corpus luteum develops from the Graafian follicle.

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