If an adult human female took a drug that inhibited LH surge which of the following would NOT occur ?

Options

A. The menstrual cycle
B. Release of ovum from a mature follicle
C. Secretion of estrogen by the follicle cells
D. Secretion of FSH ( follicle stimulating hormone ) from the pituitary

Answer

To answer the question, "If an adult human female took a drug that inhibited LH surge, which of the following would NOT occur?", we need to understand the role of Luteinizing Hormone (LH) in the menstrual cycle and ovulation process.

### Step-by-Step Solution:

1. **Understanding LH Surge**:
- Luteinizing Hormone (LH) is crucial for triggering ovulation. The LH surge occurs around the 14th day of the menstrual cycle and is responsible for the rupture of the mature follicle, leading to the release of an ovum (egg).

2. **Identifying the Role of LH**:
- The LH surge is essential for the process of ovulation. Without this surge, the mature follicle cannot release the ovum.

3. **Analyzing the Options**:
- **Option A**: "The menstrual cycle would not occur."
- This is incorrect because the menstrual cycle can still occur without ovulation; it is regulated by other hormones as well.
- **Option B**: "Release of ovum from a mature follicle."
- This is correct because if LH surge is inhibited, ovulation will not happen, and thus the ovum will not be released.
- **Option C**: "Secretion of estrogen by the follicle cells."
- This is incorrect because the secretion of estrogen can occur independently of the LH surge.
- **Option D**: "Secretion of FSH from the pituitary."
- This is also incorrect as FSH secretion is independent of LH surge.

4. **Conclusion**:
- The correct answer is **Option B**: "Release of ovum from a mature follicle" would NOT occur if LH surge is inhibited.