The pahse of menstrual cycle in himans that last for 7-8 days, is

Options

A. foliicular phase
B. ovulatory phase
C. luteal phase
D. menstruation.

Answer

To determine the phase of the menstrual cycle in humans that lasts for 7-8 days, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Menstrual Cycle**: The menstrual cycle consists of four main phases: menstruation, follicular phase, ovulatory phase, and luteal phase. Each phase has distinct characteristics and durations.

2. **Identify the Phases**:
- **Menstruation Phase**: This phase typically lasts for about 5 days. It involves the shedding of the endometrial lining if fertilization does not occur.
- **Follicular Phase**: This phase follows menstruation and is characterized by the development of ovarian follicles and the proliferation of the endometrial lining. It lasts for approximately 7-8 days.
- **Ovulatory Phase**: This phase lasts for about 2-3 days and involves the release of an ovum from the ovary, typically occurring around the 14th day of a 28-day cycle.
- **Luteal Phase**: This phase lasts for about 10-12 days and is marked by the secretion of progesterone from the corpus luteum to maintain a potential pregnancy.

3. **Determine the Correct Phase**: Since the question asks for the phase that lasts for 7-8 days, we can conclude that it is the **Follicular Phase**.

4. **Final Answer**: The phase of the menstrual cycle in humans that lasts for 7-8 days is the **Follicular Phase**.