Which of the following statements are incorrect ?
1.The longest phase of the menstrual cycle is the follicular phase while the shortest phase is the ovulatory phase.
2.when blastulation occurs ,the uterus is the luteal phase with a well-developed endometrium
3. The formation of the haploid second polar body occurs just before ovulation.
4.permanent cessation of menses is an indication of pregnancy .

Options

A. 1,2,3,and 4
B. 3 and 4
C. 2,3 and 4
D. 2,1 and 4

Answer

To solve the question, we need to evaluate each statement regarding the menstrual cycle and determine which ones are incorrect.

### Step-by-Step Solution:

1. **Evaluate Statement 1**:
- "The longest phase of the menstrual cycle is the follicular phase while the shortest phase is the ovulatory phase."
- **Analysis**: The follicular phase is indeed the longest phase of the menstrual cycle, which lasts from the first day of menstruation until ovulation. The ovulatory phase is the shortest, lasting only a day.
- **Conclusion**: This statement is **correct**.

2. **Evaluate Statement 2**:
- "When blastulation occurs, the uterus is in the luteal phase with a well-developed endometrium."
- **Analysis**: Blastulation occurs after fertilization, during the luteal phase, when the endometrium is indeed well-developed to support a potential pregnancy.
- **Conclusion**: This statement is **correct**.

3. **Evaluate Statement 3**:
- "The formation of the haploid second polar body occurs just before ovulation."
- **Analysis**: The second polar body is formed after fertilization, not before ovulation. Prior to ovulation, the oocyte is still in the metaphase of the second meiotic division.
- **Conclusion**: This statement is **incorrect**.

4. **Evaluate Statement 4**:
- "Permanent cessation of menses is an indication of pregnancy."
- **Analysis**: Permanent cessation of menses is known as menopause, which signifies the end of a woman's reproductive years, not pregnancy. Pregnancy is indicated by a temporary cessation of menses.
- **Conclusion**: This statement is **incorrect**.

### Summary of Findings:
- Statement 1: Correct
- Statement 2: Correct
- Statement 3: Incorrect
- Statement 4: Incorrect

### Final Answer:
The incorrect statements are **3 and 4**.