The level of which hormone is elevated during the luteal phase of the menstrual cycle?

Options

A. LH
B. FSH
C. Oestrogen
D. Progesterone

Answer

To answer the question regarding which hormone is elevated during the luteal phase of the menstrual cycle, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Menstrual Cycle Phases**: The menstrual cycle consists of four main phases: the follicular phase, ovulation, the luteal phase, and menstruation. Each phase is characterized by different hormonal changes.

2. **Identify the Luteal Phase**: The luteal phase occurs after ovulation. It begins when the ovary releases an egg and lasts until the start of menstruation.

3. **Hormonal Changes During the Luteal Phase**: During the luteal phase, the ruptured follicle transforms into a structure called the corpus luteum. This structure is crucial for hormone production.

4. **Determine the Key Hormone**: The corpus luteum primarily secretes progesterone, which is essential for preparing the uterine lining for potential implantation of a fertilized egg.

5. **Conclusion**: Therefore, the hormone that is elevated during the luteal phase of the menstrual cycle is progesterone.

### Final Answer:
The hormone that is elevated during the luteal phase of the menstrual cycle is **progesterone**.

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