This document summarizes the human reproductive system and process of reproduction. It describes the primary and secondary sexual characteristics that develop during puberty. It then explains the male and female reproductive systems and cells. Fertilization occurs when an egg and sperm join to form a zygote. During pregnancy, various structures like the placenta and umbilical cord develop to support the growing embryo and fetus over nine months, until birth occurs in three phases of labor.

1. CARMEN HERNANDEZ QUINTAS
ALICIA DE JUAN–RONCERO ABAD

2. REPRODUCTION
Living things create
other living things in
the process of
reproduction.
Human beings
reproduce thought
sexual reproduction.

3. Sexual characteristics
 Primery sexual  Secondary sexual
characteristics characteristics
The reproductivesystem The reproductivesystem
are the primary sexual are the primary sexual
characteristics. characteristics. During
puberty between the
ages of eleven fifteen the
reproductive system
matures.

4. Reproductive cells
Reproductive cells carry out the funcion of
reproduction
 SPERM are the male reproductive cells.They
havea head and a long tal called flagellum.
 OVA are the female reproductive cells.From
puberty an ovum,matures every month.

5. The male reproductive
system
Is made up of:
 TESTICLES-are outside the body.They
produce sperm. They are covered by a bag
of skin called the scrotum.
 VAS DEFERENS- take sperm from the
testicles to the uretha.
 URETHRA- takes the sperm outside the
body.
 SEMINAL VESICLES and PROSTATE-
produce seminal vesicles fluid and shen it
to the urethra.

6. The female reproductive
system
Is made up of:
 OVARIES – produce the ova.
 UTERUS– is where the baby develops.
 FALLOPIAN TUBES– connect the
ovaries to the uterus.
 VAGINA– connects the uterus to the
outside of the body.
 VULVA – is the external part of the
female reproductive system.

7. Reproductive system

8. Fertilisation
Fertilisation occurs when an ovum and
sperm join inside the fallopian tubes and
they create a single cell called zygote.
The zygote goes down the fallopian
tubes it is inplanted in the wall of the
uterus and it becomes an embryo.

9. Pregnancy
Pregnancy lasts about nine month and ends in a birth.
 Different structures are created to protect the
embryo.
 Placenta- takes nutrients and oxygen from the mother`s
blood to the embryo.
 Umbilical cord- connects the embryo to the placenta.
 Amniotic sac- protects the embryo.
 The baby develops step by step:
 After 3 months- the embryo has all its organ.It becomes
foetus.
 After 5 months- The baby´s body develops and is starts
moving.
 After 9 months- The baby is ready to be born.

10. Pregnancy

11. Labour
The process of giving birth is called labour.
Labourtakes placs in three phases:
 Dilation- rhythmic contractions.
 Expulsion-the baby is born.
 After birth- the placenta comes out.