Corpus luteum secretes

Options

A. Progesterone and estrogens
B. LH
C. Only progesterone
D. Progesterone and LH

Answer

**Step-by-Step Solution:**

1. **Understanding the Corpus Luteum**: The corpus luteum is a temporary endocrine structure formed in the ovary after ovulation. It develops from the remnants of the Graafian follicle that has released an egg.

2. **Hormonal Secretion**: The primary function of the corpus luteum is to secrete hormones, particularly progesterone. It may also produce some estrogen, but its main role is the secretion of progesterone.

3. **Role of Progesterone**: Progesterone is crucial for preparing the endometrium (the lining of the uterus) for potential implantation of a fertilized egg. It helps maintain the uterine lining during early pregnancy.

4. **Other Hormones**: The anterior pituitary gland secretes luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are involved in the regulation of the menstrual cycle and the growth of ovarian follicles. However, these hormones are not secreted by the corpus luteum.

5. **Conclusion**: Based on the functions and secretions of the corpus luteum, we can conclude that the main hormone it secretes is progesterone. Therefore, the correct answer to the question "Corpus luteum secretes" is **progesterone**.

**Final Answer**: The corpus luteum secretes **progesterone**.

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