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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…
• 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/bodybasics_female_repro.html
http://www.plannedparenthood.org/health-topics/emergency-contraception-morning-after-pill-4363.asp