Which part of ovary in mammals acts as an endocrine gland after ovulation ?

Options

A. Vitelline membrane
B. Graffian follicle
C. Stroma
D. Germinal epithelium

Answer

**Step-by-Step Solution:**

1. **Understanding the Ovary Structure**: In mammals, the ovary contains various structures, including follicles. The Graafian follicle is the mature follicle that is ready for ovulation.

2. **Process of Ovulation**: Ovulation occurs when the Graafian follicle releases an egg (oocyte) after it has matured. This process is crucial for reproduction.

3. **Formation of Corpus Luteum**: After ovulation, the Graafian follicle transforms into a structure known as the corpus luteum. This transformation is essential for the next steps in the reproductive cycle.

4. **Function of Corpus Luteum**: The corpus luteum acts as an endocrine gland after ovulation. It produces hormones, primarily progesterone and estrogen, which are vital for maintaining the uterine lining and supporting early pregnancy.

5. **Hormonal Role**: The hormones released by the corpus luteum help prepare the uterus for a potential embryo and maintain the pregnancy if fertilization occurs. If fertilization does not happen, the corpus luteum degenerates into a structure called corpus albicans.

6. **Conclusion**: Therefore, the part of the ovary that acts as an endocrine gland after ovulation is the **corpus luteum**.

**Final Answer**: The corpus luteum acts as an endocrine gland after ovulation in mammals.

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