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The Importance of Granulosa Cells in the Female Reproductive System

Granulosa cells are a type of cell found in the ovary, specifically in the follicle that contains the egg. These cells produce estrogen and progesterone hormones, which play important roles in the menstrual cycle and pregnancy.

Granulosa cells are located in the follicular antrum, the part of the follicle where the egg matures before ovulation. As the follicle grows, the granulosa cells divide and differentiate into two layers: the outer cumulus layer and the inner granulosa layer. The cumulus layer provides a supportive matrix for the developing egg, while the granulosa layer produces hormones that regulate the menstrual cycle and prepare the uterus for pregnancy.

Granulosa cells are responsible for producing estrogen and progesterone hormones, which have several important functions in the female reproductive system:

1. Estrogen stimulates the growth of the follicle and the uterine lining during the menstrual cycle.
2. Progesterone prepares the uterus for pregnancy by thickening the endometrium (the lining of the uterus) and maintaining its health throughout pregnancy.
3. Both estrogen and progesterone play important roles in regulating the menstrual cycle, including the thickening and shedding of the uterine lining each month.

Overall, granulosa cells are essential for the development and maturation of the egg, as well as for the regulation of the menstrual cycle and pregnancy.

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