Which of the following is responsible for preparing the uterus for implantation of fertilised egg ?

Options

A. Testosterone
B. Glucocorticoids
C. Progesterone
D. Estradiol

Answer

To determine which hormone is responsible for preparing the uterus for the implantation of a fertilized egg, we can analyze the options provided:

1. **Understanding the Role of Hormones**:
- The implantation of a fertilized egg (zygote) requires specific hormonal support to prepare the uterine lining (endometrium).

2. **Evaluating the Options**:
- **Testosterone**: This is primarily a male hormone and is not involved in the implantation process in females.
- **Glucocorticoids**: These hormones are involved in regulating metabolism and stress responses, but they do not play a direct role in preparing the uterus for implantation.
- **Progesterone**: This hormone is crucial for preparing the uterine lining for implantation. It is secreted by the corpus luteum in the ovary and promotes changes in the endometrium to make it suitable for the fertilized egg.
- **Estradiol (Estrogen)**: While it plays a role in the menstrual cycle and can support the uterine lining, its primary function is not specifically to prepare the uterus for implantation.

3. **Conclusion**:
- The hormone that is primarily responsible for preparing the uterus for the implantation of a fertilized egg is **Progesterone**.

Therefore, the correct answer is **Progesterone**.

---