cyclic changes
TRANSCRIPT
Cyclic Changes in the Female Genital System
۰۶:۴۴By Dr:Abdulwdood(Afghanmal)
Ovulation In every 28 days
Primordial follicle --- Graafian follicle(primordial follical, primary follical, secondary follical, mature follical)
Starting from 11 – 16 years of life
Ending at 45 – 50 years (menopause)
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
• Two cycles take place simultaneously in the female genital system:
1: Ovarian cycle:2: Menstruation or uterine cycle 1: Ovarian cycle
A:Pre-ovulatory Phase
Secretion of FSH from hipophysis
Development and growth of ovarian follicles
Proliferation of the endometrium
Secretion of estrogen hormone
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
B: Ovulation Phase
Takes place on the 14th (+/-1) day of ovulation cycle Doesn’t take place during pregnancy
Rare in lactating women
Mechanism:
Under the influence of Luteatropin hormone
Increased fluid pressure in the follicle
Influence of collagenase and plasmin enzymes
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
C: Post ovulatory phase
Formation of corpus luteum
Temporary endocrine gland
Secrets progesterone
Control by LH
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
4. Involution or Regression phase Corpus luteum gets atrophy and turns to corpus albicans
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
2: Menstruation or Uterine Cycle Premenstrauation or Secretory Phase
12 days Endometrial thickness reaches to the maximum Secretion of uterine glands
Glycogen Mucin
Uterine is ready for the implantation of fertilized ovum Also called luteal phase If the ovum has not fertilized 12-14 day and no progesterone If the ovum has fertilized 3-4 month( plasenta formation)
۰۶:۴۴Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
A: Menstrual phase 3-5 days 50 – 60cc blood No coagulation due to the presence of proteolytic enzymes Thickness of endometrium remains 1/10 of the normal
۰۶:۴۴ Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
Post menstruation or Proliferation Phase
10 days
Endometrium repairs under the influence of estrogen
hormone
Also called follicular phase
۰۶:۴۴ Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
۰۶:۴۴ Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu
TT hh e ee e nn dd
بريالي بريالي اوسئاوسئ
۱۳۹۳/۶/۱۹سه شنبه:
Presentation of Embryology byDr:Ab.wadood(Afghanmal)Mu