Menstrual Cycle
9th Grade Health
Menstrual Cycle
•
The cycle begins when
an______starts to mature in one of
the ______________.
• Egg
• Ovaries
• 22. The lining of the
_______thickens to prepare
for ___________.
• Uterus
• Pregnancy
• Progesterone is responsible
for this!!!
– Maintaining growth of the
endometrium for implantation of
a fertilized egg
Lining= Endometrium
• 23. If the egg is not fertilized, the lining
breaks down and is discharged. This
discharged of dead tissue and blood is
called__________.
• Menstruation
• Menarche is the first menstrual period, this
usually occur between the age of 10 and age
16
• 24. The cycles takes about 21-35 days.
The blood flow occurs for the first 3-7
days of the cycle.
• Estrogen has reached its highest level 2 days
before ovulation
•
Ovulation occurs about midways through the
cycle (about day 14)
– Endometrium is at the thickest point!
– Luteinizing Hormone(LH) signals the release of
ovum from ovary-ovulation
– If egg is not fertilized by the time that it reaches
the uterus progesterone and estrogen levels
drop.
25.Factors affecting Menstruation are:
– Diet
– Illness
– Travel
– Exercise
– Weight gain/loss
Every women is different
•
•
•
•
•
Age
Menstruation begins
Length # of days
Cramps
Back Pain
Premenstrual syndrome (PMS)
• Occurs before the menstrual period
– Nervous tension
– Mood swings
– Headaches
– Bloating
– Irritability
• May be caused by hormone levels
• Approximately 85% of women who menstruate
report changes in the days or weeks before their
menstruation that cause problems that affect their
normal lives. This is known as Premenstrual
Syndrome (PMS).
Menopause
• The ovaries slow down hormone
production and stop releasing an
egg. This takes place around the
ages____________.
• 45-55
Endometriosis
• Tissue from the lining of the uterus
grows outside the uterus, in the pelvic
cavity.
• Causes pain in pelvic areas, especially
during menstruation.
• Can lead to sterility
• Can be corrected with hormones or
surgical removal of unwanted tissue.
• Endometriosis affects more
than 5 million American
women, including teen girls.
• It's not always diagnosed right
away in teens because at first
they or their doctors assume that
their painful periods are a normal
part of menstruating.