Corpus luteum secretes a hormone called

Options

A. prolactin
B. progesterone
C. aldosterone
D. testosterone.

Answer

**Step-by-Step Solution:**

1. **Identify the Structure**: The corpus luteum is a yellowish structure formed in the ovary. It develops from the Graafian follicle after ovulation.

2. **Understand its Function**: The primary role of the corpus luteum is to secrete hormones that are crucial for reproductive processes.

3. **Identify the Hormone Secreted**: The main hormone secreted by the corpus luteum is progesterone. This hormone is essential for maintaining the endometrial lining of the uterus.

4. **Role of Progesterone**: Progesterone helps in preparing the uterus for potential implantation of a fertilized egg and supports early stages of pregnancy.

5. **Evaluate Other Options**:
- Prolactin is involved in milk production but is not secreted by the corpus luteum.
- Aldosterone is a steroid hormone related to blood pressure regulation and is not produced by the corpus luteum.
- Testosterone is a male sex hormone and is not related to the function of the corpus luteum.

6. **Conclusion**: The hormone secreted by the corpus luteum is progesterone.

**Final Answer**: The corpus luteum secretes the hormone called **progesterone**.

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