Ovulation
Egg grows Corpus Luteum ShrinksPl
asm
a Co
ncen
trati
on
of S
tero
ids
(arb
itrar
y un
its)
Hormone Levels
Days 1 7 14 21 28
Estradiol
Progesterone
Endometrial Thickness Endometrium
3-5 daysMenses
3-5 days
Human Reproduction
Ovary
Endometrium
Endometrium – Menstruation Cycle
Primary follicles
Uterus
Ovary
Endometrium thickens
Uterus
Endometrium – Menstruation Cycle
Mature follicleCorpus luteus
Ovary
Endometrium (shedding)
Endometrium – Menstruation Cycle
UterusCorpus luteus
Primary follicles
Ovary
Endometrium
Uterus
Endometrium Is Thinner on a Hormonal Contraceptive
Ovary
Endometrium
Uterus
Menorrhagia
Excess tissue shedding from endometrium
Ovary
Endometrium
Uterus
Metrorrhagia
Tissue breaking away from
endometrium