•Major stage of puberty (between the
ages of 8 and 13)
•From the beginning of one period to the
beginning of the next takes about 28
days for most people (can differ)
DAY 1 - 7
•First day of menstrual period
•Blood and tissues that have built up on the
inner lining of the uterus flow of out of the
vagina
•Last anywhere between 2-7 days
•After menstruation, the body begins
releasing hormones that signal the uterus to
get ready to receive a new egg ( 1/10 of a
poppy seed)
DAY 8 - 13
•Hormones prepare an egg to be
released from the ovary
•Lining of uterus thickens and becomes
rich in blood and nutrients in case a
sperm fertilizes the egg
•The fertilized egg would then attach
to the lining
DAY 14
•Middle of the cycle ovulation occurs
•Ovulation is when the egg is released
from one of the ovaries.
•During this time the egg will travel
down the fallopian tube
Ovulation
•BEFORE ovulation – estrogen is released
to stimulate the uterus to build the
lining with extra blood and tissue to
prepare for pregnancy
•If the egg is fertilized by the sperm
cell it travels to the uterus and
attaches
DAY 15-28
•Most of the time the egg is not fertilized
•If the egg is not fertilized the egg will
begin to dissolve
•Then the uterus no longer needs the extra
blood and tissue
•Then the menstrual cycle starts over again
Women may experience…
•Fluid retention
•Cramping
•Mood swings
•Weight gain
•Breast tenderness
•Diarrhea
•Constipation
Hormones
•FSH – Follicle Stimulation
Hormone
•LH - Luteinizing hormone LH –
signals ovulation
•Estrogen – produced
throughout the menstrual cycle
•Progesterone – produced during
second half of cycle –
contributes to thickening of
the endometrium which is shed
during the menstrual phase if
fertilization does not take place
- Produced
in the
pituitary
gland
-Produced
by the
follicles in
the
ovaries