4.menstrual cycle 1. the menstrual cycle is a monthly cycle of changes in the female reproductive...
TRANSCRIPT
The menstrual cycle is a monthly cycle of
changes in the female reproductive system
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It is the way the uterus changes before and after the egg cell is released
The average menstrual cycle is 28 days but may vary from 20 to 40 days
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It includes the maturing of the egg cell and preparation of the uterus to receive
a fertilized egg
The bleeding is the lining of the uterus being cleaned-out
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By shedding and discharging the blood vessels not needed since the egg cell
was not fertilized
The egg cell will travel along an oviduct called the Fallopian Tube
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This trip lasts about 3 days and is the time for pregnancy to occur
If sperm is available, the egg cell can be fertilized immediately upon release
from the ovary
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Or could take a few days before fertilization
The egg cell continues from the Fallopian Tube to the uterus
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If the egg cell has been fertilized then it will embed into the lining of the uterus
If the egg cell is not fertilized then it will die
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The lining of the uterus will begin to release from the uterus to begin the
period again
Menstruation occurs when the girl’s reproductive organs mature
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This occurs around the age of 9 to 16 and will last until about 45 to 55 years
of age
Late in menstruation there will be a gradual reduction of ovulation
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Which could only occur every 2 or 3 months at a time until it stops
completely