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The follicular phase, also known as the preovulatory phase or proliferative phase, [1] is the phase of the estrous cycle (or, in primates [2] for example, the menstrual cycle) during which follicles in the ovary mature from primary follicle to a fully mature graafian follicle. It ends with ovulation.
In biology, folliculogenesis is the maturation of the ovarian follicle, a densely packed shell of somatic cells that contains an immature oocyte. Folliculogenesis describes the progression of a number of small primordial follicles into large preovulatory follicles that occurs in part during the menstrual cycle.
The follicular phase is the first part of the ovarian cycle and it ends with the completion of the antral follicles. [9] Meiosis (cell division) remains incomplete in the egg cells until the antral follicle is formed. During this phase usually only one ovarian follicle fully matures and gets ready to release an egg. [20]
You’ve heard of the four stages of the menstrual cycle —menstrual, follicular, ovulation, luteal...
The follicular phase (or proliferative phase) is the phase of the menstrual cycle during which the ovarian follicles mature. The follicular phase lasts from the beginning of menstruation to the start of ovulation. [11] [12] For ovulation to be successful, the ovum must be supported by the corona radiata and cumulus oophorous granulosa cells. [13]
Granulosa cell. Pig oocyte surrounded by granulosa cells. Fluorescence microscopy, colored with DAPI. A granulosa cell or follicular cell is a somatic cell of the sex cord that is closely associated with the developing female gamete (called an oocyte or egg) in the ovary of mammals.
Luteal phase. The menstrual cycle is on average 28 days in length. It begins with menses (day 1–7) during the follicular phase (day 1–14), followed by ovulation (day 14) and ending with the luteal phase (day 14–28). [1] Unlike the follicular phase which can vary in length among individuals, the luteal phase is typically fixed at ...
Follicle-stimulating hormone (FSH) is a gonadotropin, a glycoprotein polypeptide hormone. [1] FSH is synthesized and secreted by the gonadotropic cells of the anterior pituitary gland [2] and regulates the development, growth, pubertal maturation, and reproductive processes of the body. FSH and luteinizing hormone (LH) work together in the ...