. Describe the sequence of events in the ovarian cycle, with reference the follicular phase, ovulation,...

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. Describe the sequence of events in the ovarian cycle, withreference the follicular phase, ovulation, and the luteal phaseOVARIAN CYCLE: REMEMBER: DAY 1 is the FIRST day of womanâ€™speriod.
Stage Day (s) What are the hypothalamus and pituitary doing?What is happening in the ovary and what is it producing?
Follicular phase 1 ïƒ
Ovulation
Luteal Phase

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OVARIAN CHANGES DURING MENSTRUAL CYCLE Changes in the ovary during each menstrual cycle occur in three phases A Follicular phase B Ovulation C Luteal phase FOLLICULAR PHASE Follicular phase extends from the 5th day of the cycle until the time of ovulation which takes place on 14th day Maturation of ovum with development of ovarian follicles takes place during this phase Ovarian Follicles Ovarian follicles are glandular structures present in the cortex of ovary Each follicle consists of the ovum surrounded by epithelial cells namely granulosa cells The follicles gradually grow into a matured follicle through various stages Different follicles 1 Primordial follicle 2 Primary follicle 3 Vesicular follicle 4 Matured follicle or graafian follicle 1 Primordial Follicle At the time of puberty both the ovaries contain about 400000 primordial follicles Each primordial follicle has an ovum which is incompletely surrounded by the granulosa cells These cells provide nutrition to the ovum during childhood Granulosa cells also secrete the oocyte maturation inhibiting factor which keeps ovum in the immature stage All the ova present in the ovaries are formed before birth No new ovum is developed after birth At the onset of puberty under the influence of FSH and LH from the pituitary the primordial follicles start growing through various stages 2 Primary Follicle Primordial follicle becomes the primary follicle when ovum is completely surrounded by the granulosa cell During this stage the follicle and the ovum increase in size Diameter of the follicle increases to 30 to 40 and that of ovum increases to about 20 The follicle is not covered by a definite connective tissue capsule Primary follicles develop into vesicular follicles 3 See Answer

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