human reproduction 3
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Unit 4
.-The h
um
an re
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ductio
nTHE
HUMAN
REPRODUCTION
By
Guiomar Melendre
Laura Gómez
Leyre Fernández
Teacher: María Class: 6º B
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Unit 4
.-The h
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1- Reproduction
Living things create other living things in the proess of reprouction. Human beings reproduce through sexual reproduction, bringing male and female sex cells together.
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PRIMARY SEXUAL CHARACTERISTICS
Female Male
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SECONDARY SEXUAL CHARACTERISTICS
Girls develop breasts and their hips get wider.
Boys get deeper voices.
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REPRODUCTIVE CELLS
OVA
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2- The reproductive system
Female reproductive system
Male reproductive system
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THE FEMALE REPRODUCTIVE SYSTEM
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THE MALE REPRODUCTIVE SYSTEM
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Unit 4
.-The h
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3- Pregnancy and birth
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PREGNANCY
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Placenta: is connected to the wall of the uterus.
Umbilical cord:is made of blood vessels.
Amniotic sac: is a membrane filled with fluid.
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DILATIONRhythmic contractions make the opening of the vagina and vulva big enough for the baby to come out.
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EXPULSION The baby is born and the doctor cuts the umbilical cord.
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AFTERBIRTH The placenta comes out of the mother’s body.
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