The corpus luteum is the structure which

Options

A. Releases ovum from ovary
B. Secretes progesterone
C. Develops in Graafian follicle
D. Produces LH

Answer

**Step-by-Step Solution:**

1. **Understanding the Corpus Luteum**: The corpus luteum is a temporary endocrine structure that forms in the ovary after ovulation. It develops from the remnants of the mature Graafian follicle after it has released a secondary oocyte.

2. **Formation of the Corpus Luteum**: After the Graafian follicle releases the secondary oocyte, the remaining cells of the follicle undergo transformation to form the corpus luteum. This process is stimulated by luteinizing hormone (LH).

3. **Function of the Corpus Luteum**: The primary function of the corpus luteum is to secrete hormones, particularly progesterone. Progesterone is crucial for maintaining the endometrium (the inner lining of the uterus) and preparing it for potential implantation of a fertilized egg.

4. **Hormonal Regulation**: The corpus luteum is regulated by hormones from the anterior pituitary gland, specifically LH and follicle-stimulating hormone (FSH). LH is responsible for the formation of the corpus luteum, while FSH is involved in the maturation of the follicles.

5. **Conclusion**: In summary, the corpus luteum is a structure that forms from the Graafian follicle after ovulation and primarily functions to secrete progesterone, which is essential for maintaining the uterine lining.

**Final Answer**: The corpus luteum is the structure which secretes progesterone.

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