From Conception to Birth WORKSHEET

[Pages:27]From Conception to Birth WORKSHEET

ACTIVITY

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Human Growth & Development

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Menstrual cycle (p. 454)

Human Growth & Development

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Menstruation

Each month the uterus prepares for possible pregancy If pregnancy does not occur, the thickened lining of the

uterus, called endometrium, breaks down into blood, tissue and fluids.

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Days 1-8

The cycle begins with the first day of menstruation. Menstruation is the shedding of the uterine lining.

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Days 9-13

The hormones FSH and LH cause an egg to mature in one of the ovaries

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Day 14

Ovulation occurs and the mature egg is released into one of the fallopian tubes

Ovulation is the process of release a mature ovum into the fallopian tube each month.

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Days 15-28

The egg travels through the fallopian tube to the uterus. If the egg is not fertilized the cycle starts again.

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