During menstrual cycle, which hormone shows dual peak ?

Options

A. Estrogen - Both peaks during first half of menstrual cycle .
B. Estrogen - One peak during first half and second peak during second half of menstrual cycle.
C. Progesterone - Both peaks during first half of menstrual cycle.
D. Progesterone - One peak during first half and second peak during second half of menstrual cycle

Answer

To solve the question regarding which hormone shows a dual peak during the menstrual cycle, we can break it down into the following steps:

### Step 1: Understand the Menstrual Cycle
The menstrual cycle is typically around 28 to 29 days long and consists of several phases: menstruation, the follicular phase, ovulation, and the luteal phase.

### Step 2: Identify the Hormones Involved
The primary hormones involved in the menstrual cycle are estrogen and progesterone. Estrogen is produced by the developing follicles, while progesterone is produced by the corpus luteum after ovulation.

### Step 3: Analyze the Hormonal Peaks
- **Estrogen**:
- Estrogen levels rise during the follicular phase, peaking just before ovulation (around day 14).
- After ovulation, estrogen levels rise again during the luteal phase, creating a second peak.

- **Progesterone**:
- Progesterone levels increase after ovulation due to the corpus luteum but typically do not show a dual peak like estrogen.

### Step 4: Determine the Correct Answer
Given the information about the peaks of estrogen:
- The first peak occurs during the first half of the menstrual cycle (follicular phase).
- The second peak occurs in the second half of the menstrual cycle (luteal phase).

Thus, the hormone that shows a dual peak during the menstrual cycle is **Estrogen**.

### Final Answer
The answer to the question is **B. Estrogen, one peak during the first half and second peak during the second half of the menstrual cycle.**

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