Transcript
THE REPRODUCTION
Living things create other living things in the process of reproductionHuman beings reproduce through sexual reproduction.
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
REPRODUCTIVE CELLS
sperm ovum
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.
OVUM
Ova are the female reproductive cells.They do not move.From puberty,an ovum matures every month.Ova are round and big.
REPRODUCTIVE SYSTEM
THERE ARE
MALE FEMALE
Male reproductive system
Female reproductive system
fertilisation
Fertilisation occurs when an ovum and a sperm join inside the Fallopian tubes and they create a single cell called zygote
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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