estrogen
The fertilized egg is called a blastocyst during implantation. The blastocyst is a multicellular structure that forms from the fertilized egg as it develops and prepares for implantation in the uterine lining.
Progesterone levels rise after ovulation to protect the fertilized egg and to prevent the uterine lining from shedding allowing the fertilized ovum to implant in the lining. Progesterone protects the zygote until hCG kicks in after implantation.
Oestrogen, Progesterone and small amounts of Androgen and Testosterone (male hormones) are produced in the Ovaries. Oestrogen: regulates the menstrual cycle and prepares the breasts for milk production. Progesterone: prepares the lining of the uterus, for implantation of a fertilized egg, and helps maintain the pregnancy.
Well, of course. Menstruation is what prepares the uterus for the implantation of the fertilized egg during the ovulation that follows it. You can't get pregnant DURING your period (usually).
The Uterus
Name of that hormone is 'Estrogen'. It is called as 'Oestrogen' in British English. It prepares the uterus for pregnancy. It is secreted by the follicles in the ovary.
Menstruation
During ovulation, an egg is released from the ovary and if it is not fertilized, menstruation occurs. Ovulation and menstruation are interconnected as they are part of the menstrual cycle, which prepares the body for potential pregnancy each month.
No, menstration is the womb emptying after it prepares for a baby that is not fertilized. If it is, it will not empty.
The increase in estrogen levels during days 1-10 of the menstrual cycle stimulates the growth and thickening of the uterine lining (endometrium). This thickening prepares the uterus for potential implantation of a fertilized egg.
During the secretory phase of the uterine cycle, the endometrium continues to thicken in preparation for possible implantation of a fertilized egg. The glands in the endometrium produce a nutrient-rich secretion to support a potential embryo. If fertilization does not occur, this phase will be followed by menstruation.
Labor and delivery.