This document summarizes the process of human reproduction, including the development of primary and secondary sex characteristics in males and females during puberty, how fertilization occurs when sperm and eggs join inside the fallopian tubes, the stages of pregnancy over nine months including the roles of the placenta and umbilical cord, and the three stages of labor ending with the delivery of the baby and afterbirth.

1. By Julia Martinez Ariza.
6º B

2. REPRODUCTION
Human beings
reproduce through
sexual
reproduction, brin
ging male and
female sex cells
together.

3. Female and male.
Primary sexual Secondary sexual
characteristics characteristics
 Girls develop breast and
their hips get wider.
 Boys get deeper voices

4. Reproductive cells
Sperm Ova

5. The female reproductive cells

6. The male reproductive system
The male
reproductive
system is
made up of
these organs
.

7. Fertilisation
 Fertilisation occurs when an ovum and a sperm
join inside the Fallopian tubes and they create a
single cell called zygote.The zygote goes down the
Fallopian tubes, it is implanted in the wall of the
uterus and it becomes an embryo.

8. PREGNANCY
 Pregnancy lasts about nine
months :
The placenta takes nutrients
and oxygen.
The umbilical cord connects
the embryo to the placenta.
The amniotic sac protecs the
embryo.

9. LABOUR
DILATION
EXPULSION.
AFTERBIRTH

10. THE END