Which of the following function does not relative to estrogens

Options

A. development and maintenance of female reproductive structures
B. to increase in protein anabolism
C. to control fluid electrolyte balance
D. dilation of uterine cervix for parturition

Answer

### Step-by-Step Solution:

1. **Understanding Estrogens**:
- Estrogens are hormones primarily responsible for the development and regulation of the female reproductive system and secondary sexual characteristics. They play a crucial role in the menstrual cycle and pregnancy.

2. **Functions of Estrogens**:
- **Thickening of Uterine Wall**: Estrogens thicken the endometrial lining of the uterus, preparing it for potential implantation of a fertilized ovum.
- **Development and Maintenance of Female Reproductive Structures**: Estrogens are essential for the development and maintenance of female reproductive organs, including the uterus, ovaries, and breasts.
- **Protein Anabolism**: Estrogens promote protein synthesis, which is important for various bodily functions, including the thickening of the uterine wall.
- **Fluid and Electrolyte Balance**: Estrogens help maintain the balance of fluids and electrolytes in the body, which can influence various physiological processes.

3. **Analyzing the Options**:
- **Option 1**: Development and maintenance of female reproductive structures - This is related to estrogens.
- **Option 2**: Increase protein anabolism - This is also related to estrogens.
- **Option 3**: Control fluid electrolyte balance - This is related to estrogens, although to a lesser extent.
- **Option 4**: Dilation of uterine cervix for parturition - This is NOT related to estrogens. Instead, estrogens are involved in making the uterine wall stronger and promoting contractions rather than dilation.

4. **Conclusion**:
- The function that does not relate to estrogens is the dilation of the uterine cervix for parturition. Therefore, the correct answer is **Option 4**.