Final answer:
The main functions of Estriadol and Progesterone are to regulate the menstrual cycle, prepare and maintain the uterine lining for pregnancy, and support breast milk production.
Step-by-step explanation:
The primary functions of Estriadol (estradiol) and Progesterone are related to the female reproductive system. Estriadol, which is a form of estrogen, is crucial for the development of female secondary sexual characteristics at puberty, such as breast development and the broadening of the pelvis. Together with progesterone, it plays a vital role in regulating the menstrual cycle, preparing the uterus for pregnancy, and maintaining the pregnancy once it occurs.
Answering the student's question, the four main functions of Estriadol and Progesterone would be:
- Regulate the menstrual cycle, ensuring a regular process of ovulation and menstruation.
- Prepare the uterine lining for pregnancy, making the uterine environment suitable for a fertilized egg to implant and grow.
- Maintain pregnancy by inhibiting uterine contractions and supporting the placenta's functions.
- Support breast milk production by preparing the mammary glands for lactation post-pregnancy.
Therefore, the correct answer to the student's question is option D: Regulate the menstrual cycle, prepare the uterine lining for pregnancy, maintain pregnancy, and support breast milk production.