1. HUMAN REPRODUCTION
BY TERESA ORTEGA FERNANDEZ

2. REPRODUCTION
PRIMARY SEXSUAL
CHARACTERISTICS
The reproductive systems are the
primary sexsual characteristics.
We already have them when we are
born and they are different for male
and female.

3. SECONDARY SEXSUAL
CHARACTERISTICS
The external characteristics which
differentiate men from women.
During puberty, between the ages of
eleven and fifteen, the reproductive
system matures.
Some physical changes are the same
for both sexes like growing taller or
hair growing in the armpit.

4. OTHER CHANGES
Are specific to each sex:
Girls develop breasts and their hips
get wider.
Boys get deeper voices and get facial
hair

5. REPRODUCTIVE CELLS
Reproductive cells carry out the function of
reproduction.
Sperm: are the male reproductive cells.
They are small. They have a head and a long
tail called a flagellum.
Ova: are the female reproductive cells.
They do not move. From puberty ,an ovum
matures every month.

6. REPRODUCTIVE CELLS

7. THE FEMALE REPRODUCTIVE
SYSTEM
Is made up of these organs:
THE OVARIES.
THE UTERUS.
THE FALLOPIAN
TUBES.
THE VAGINA.
THE VULVA.

8. THE MALE REPRODUCTIVE
SYSTEM
Is made up of these organs:
THE TESTICLES.
THE VAS DEFERENS.
THE URETHRA
THE SEMINAL
VESICLES AND
PROSTATE
THE PENIS

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

10. PREGNANCY
Different structures:
THE PLACENTA.
THE UMBILICAL CORD.
THE AMNIOTIC SAC. LABOUR:
Step by step: DILATION
After 3 months. EXPULSION
After 5 months. AFTER BIRTH
After 9 months.