1. REPRODUCTION
Definition
Primary sexual characteristics
Secondary sexual characteristics
Reproductive cells
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2. Definition
Human beings
reproduce
through sexual
reproduction,
bringing male
and female sex
together.
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3. Primary sexual
characteristics
We already have
them when we are
born and they are
different for male
a female.
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4. Secondary sexual
characteristics
This characters are
the external
characteristics
which differentiate
men from women an
appear during
puberty with some
physical changes.
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5. Reproductive cells
Carry out the function of reproduction:
•Sperm
•Ovary
Are the male
reproductive
cells
Are the female
reproductive
cells
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6. THE REPRODUCTIVE
SYSTEM
The female reproductive system
The male reproductive system
Fertilisation
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7. The female reproductive
system
Is made up of these organs:
Fallopian
tubes
uterus
vulva
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ovary
vagina

8. The male reproductive
system
Is made up of these organs:
urethra
penis
vas
deferens
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seminal
vesicles
prostate
scrotum
testicle

9. Fertilisation
Occurs when an ovum
and sperm join and
they create a cell
called zygote.
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It is implanted in the
wall of the uterus and
it become an embryo.

10. PREGNANCY AND
BIRTH
Pregnancy, protective structures
Pregnancy, baby development
Birth, labour
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11. Pregnancy, protective
structures
During the pregnancy different structures
are create to protect the embryo.
Placenta: takes
nutrients and oxygen.
Umbilical cordon: connects
the embryo to the placenta.
Amniotic sac: protects
the embryo.
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12. Pregnancy, baby
development
• After 3 months: the embrion has all its
organs. It becomes an foetus
• After 5 months: the foetus starts moving
• After 9 months: is ready to be born
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13. Parts of the labour
1
2
3
Dilation: the contractions
make the opening of the
vagina and vulva big enough
for the baby to come out.
Expulsion: the baby is born.
Afterbirth: the placenta
comes out of the mother’s
body.
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2
3

14. • ALVARO M.
• HELENA
• ALEX
• MARCOS
FIN