trabajo de medio human reproduction
TRANSCRIPT
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THE REPRODUCTION
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Living things create other living things in the process of reproductionHuman beings reproduce through sexual reproduction.
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Sexual characteristic
primary
We alredy have them when we are born and they are
different for male and female
secundaryAre the external
characteristics with differnetiate men from
women
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REPRODUCTIVE CELLS
sperm ovum
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SPERM
Sperm are the male reproductive cells.They are small.They have a head and a longe tail called flagellum.They are produced in large numbers from the time of puberty.
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OVUM
Ova are the female reproductive cells.They do not move.From puberty,an ovum matures every month.Ova are round and big.
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REPRODUCTIVE SYSTEM
THERE ARE
MALE FEMALE
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Male reproductive system
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Female reproductive system
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fertilisation
Fertilisation occurs when an ovum and a sperm join inside the Fallopian tubes and they create a single cell called zygote
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PREGNANCY AND BIRTH.
LABOUR: The process of giving birth is called labour. Labour takes place in three phases:
DILATION: Rhythmic contractions make the opening of the vagina and vulva big enough for the baby to come out.
EXPULSION:The baby is born and the doctor cuts the umbilical cord.
AFTERBIRTH:The placenta comes out of the mother´s body.
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