Transcript MENSTRUAL CYCLE

MENSTRUAL
CYCLE
• 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…
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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
http://kidshealth.org/misc/movie/bodybasics/bodyba
sics_female_repro.html
http://www.plannedparenthood.org/healthtopics/emergency-contraception-morning-after-pill4363.asp