طَـبيب || الدفعـة 6

Capacitation is aperiod of condition in female reproductive tract that the human lasts approximately 7 hours

Process befor fertilization _Capacitation _The acrosome reaction to acquire this capability

Mechanism of movement sperm from vagiba to uterine tube By muscular contraction of uterus and uterine tube And very little by thei own propulsion

Only 1% of sperm deposited in vagina

Fertilization occure in ampullary region of uterine tube

The fertilized oocyte reach uterine lumen in 3_4 days

Mechanism of carrier oocyte from ovary to uterine tube By two ways by sweeping movement of fimbria and motion of cillia on epithelial cell

Explain luteolysis process

Corpus luteum reach maximum development 9 day after ovulation

Q/What fate of corpus luteum if fertilization does not occure?

Progestron togather with estrogen causes uterine mucosa to enter secretory stage

Corpus luteum secrete eastrogen and progestrone

Granulosa cell togather with cell from theca interna develope yellowish pigment and change into lutein cells

Define corona radiata

Ovulation occure in Oocyte from region of Cumulus oophorus

Prostoglandin increase in response to LH surge

Q/explain ovulation process

In ovulation There is increase in LH that causes primary oocyte to complete Meiosis 1 and follicle enter Preovulatory mature vesicular stage

عدنا ovulation يصير بين 14_18 وراها لحد يوم 24 يتكون corpus luteum وراها اما اكو حمل ويستمر يفرز هرمونات او ماكو ويتحول ل fibrous tissue لونه ابيض

Estrogen are produced under cooperation of Theca interna and granulosa