MENSTRUAL CYCLE
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27 Terms
Menstrual Cycle
A series of changes that happen in the female body approximately every 28 days
Starts at
Puberty
Finishes at
Menopause
Does not happen during
Pregnancy
Days 1-5
Menstruation + new egg
Menstruation
Uterus lining breaks down and passes out of vagina with some blood
A new egg
Matures in ovary
Days 6-13
New lining + egg development
New lining
Develops in uterus
Egg continues
Development in ovary
Day 14
Ovulation
Ovulation
Egg is released from ovary to fallopian tube
Days 15-28
Lining of uterus stays in place (preparation for a baby)
Fertile period
Time in a menstrual cycle when a woman is most likely to become pregnant
Sperm can live up to
3 days
An egg can stay alive for
2 days
Fertile period
About day 11 – 16
Depends on length
Of a cycle
Varies from
Woman to woman
Fertilisation
Fusion of the male and female gametes to form a zygote
Tiny hairs push
The egg along the fallopian tube
Many sperm swim
Around the egg
Only one
Egg can fertilise it
Implantation
Attachment of the embryo to the lining of the uterus
Tiny hairs push
Zygote towards uterus
Zygote divides and
Develops into a ball of cells
Ball of cells become
An embryo