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Sexual characteristics
characteristic
puberty
Genital organs
Pituitary gland
Vocabulary
Birth
Primarysexualcharacteristics
0
11-14
13-15
Secondarysexualcharacteristics
Puberty
Enables human beings to
reproduce. We have
these when we born.
Differentiate men and
women. Changes occur:
Men: -lower voice
- develop muscles
- a lot of facial and
body hair.
Women: - higher voice
- breasts
- wider hips
- little body hair
Puberty occurs when the
reproductive system
matures. It starts when
pituitary gland sends
hormones to the genital
organs.
When?
TAKE CARE OF YOUR
BODY
Due to hormonal
changes during
puberty, it is very
important to pay
attention to your
personal hygiene.
LET´S TALK!
Accepting
changes
during
puberty.
The female reproductive system
Internal organs:
-Ovaries: they produce the eggs necessary
for reproduction.
-Fallopian tubes: they connect the ovaries to
the uterus.
-Uterus: it is the organ where the baby
develops during pregnancy.
-Vagina: it is a channel which goes from the
uterus to the outside of the body.
External organs:
The female external genital organs have a
collective name: the vulva.
The vulva includes creases of skin called
labia, the clitoris and the openings to the
vagina and the urethra.
The male reproductive system
Internal genital organs:
-Testicles/ testes: they produce the
sperm cells necessary for reproduction.
-Vas deferens: sperm travels through
this tube to the urethra.
-Urethra: sperm travels through this
passage to the outside of the body.
-Seminal vesicles and prostate gland:
they produce a liquid to feed and
transport sperm.
External genital organs:
-Scrotum: it is a bag of skin which
contains the testicles.
-Penis: the urethra passes through this
organ.
Sex cells
menstruation
fertilisation
zygote
embryo
foetus
Vocabulary
Sex cells
Egg cells are the female sex cells. They are
large and round.
Sperm are the male sex cells.
They are very small . From the
beginning of puberty on, about
200 million of these are
producedevery day.
From puberty on, one egg
matures and passes through a
Fallopian tube approximately
every twenty-eight days.
If the egg cell is not fertilised, it
leaves the body through the
vagina. Minor bleeding occurs,
called menstruation or a
period.
Menstruation or a period
Fertilisation Fertilisation occurs when
an egg cell and sperm
unite in one of the
Fallopian tubes or in the
uterus.
Zygote: it is the first cell of
the new human being that
has all the DNA of the two
parents.
Embryo: zygote divides
numerous times and forms
an embryo. Then the
embryo is implanted in the
wall of the uterus.
The embryo is
protected by a sac
called the amnion,
which fills with liquid
It gives the embryo
nutrients and
oxygen from the
mother.
The embryo is connected
to the placenta by the
umbilical cord.
When the embryo is implanted in the wall of the uterus. It is ready to
develop into a baby. The embryo needs food and oxygen to grow. It also
needs protection.
Foetus: after about eight weeks, when the main structures and organs
have formed, the embroy is called a foetus.
Birth
labour
Contractions
Caesarean section
Belly button
weigh
premature incubator
lactation
nourishmentInfant formula
Birth The process of giving birth is called labour.
The involuntary muscles produce contractions in the uterus. The sac
containing the foetus breaks. The liquid around the foetus is expelled.
Dilation: the opening of
the vagina dilates so that
the baby ca come out.
Birth: the baby
leaves the
mother´s body.
Afterbirth: the placenta is expelled.
If the labour is difficult or dangerous for the mother or the baby, doctors perform a
Caesarean section to take the baby from the mother´s uterus.
Newborn babies
When a baby is born, the umbilical cord is cut.
The mark left is called a belly button.
Newborn babies are about fifty centimetres long
and weigh about three kilograms.
Babies born before term are called
premature.
Premature babies are kept in incubators,
where they can develop and grow stronger.
Lactation
Lactation is the period when babies get their
nourishment from their mother´s milk.
If a mother cannot produce milk, infant formula is used.
It is made from modified cow´s milk or soya milk. Breast
milk is best, but formula provides many neccesary
nutrients.

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Sexual characteristics blog.ppt

  • 3. Birth Primarysexualcharacteristics 0 11-14 13-15 Secondarysexualcharacteristics Puberty Enables human beings to reproduce. We have these when we born. Differentiate men and women. Changes occur: Men: -lower voice - develop muscles - a lot of facial and body hair. Women: - higher voice - breasts - wider hips - little body hair Puberty occurs when the reproductive system matures. It starts when pituitary gland sends hormones to the genital organs. When?
  • 4. TAKE CARE OF YOUR BODY Due to hormonal changes during puberty, it is very important to pay attention to your personal hygiene. LET´S TALK! Accepting changes during puberty.
  • 5. The female reproductive system Internal organs: -Ovaries: they produce the eggs necessary for reproduction. -Fallopian tubes: they connect the ovaries to the uterus. -Uterus: it is the organ where the baby develops during pregnancy. -Vagina: it is a channel which goes from the uterus to the outside of the body. External organs: The female external genital organs have a collective name: the vulva. The vulva includes creases of skin called labia, the clitoris and the openings to the vagina and the urethra.
  • 6. The male reproductive system Internal genital organs: -Testicles/ testes: they produce the sperm cells necessary for reproduction. -Vas deferens: sperm travels through this tube to the urethra. -Urethra: sperm travels through this passage to the outside of the body. -Seminal vesicles and prostate gland: they produce a liquid to feed and transport sperm. External genital organs: -Scrotum: it is a bag of skin which contains the testicles. -Penis: the urethra passes through this organ.
  • 8. Sex cells Egg cells are the female sex cells. They are large and round. Sperm are the male sex cells. They are very small . From the beginning of puberty on, about 200 million of these are producedevery day.
  • 9. From puberty on, one egg matures and passes through a Fallopian tube approximately every twenty-eight days. If the egg cell is not fertilised, it leaves the body through the vagina. Minor bleeding occurs, called menstruation or a period. Menstruation or a period
  • 10. Fertilisation Fertilisation occurs when an egg cell and sperm unite in one of the Fallopian tubes or in the uterus. Zygote: it is the first cell of the new human being that has all the DNA of the two parents. Embryo: zygote divides numerous times and forms an embryo. Then the embryo is implanted in the wall of the uterus.
  • 11. The embryo is protected by a sac called the amnion, which fills with liquid It gives the embryo nutrients and oxygen from the mother. The embryo is connected to the placenta by the umbilical cord. When the embryo is implanted in the wall of the uterus. It is ready to develop into a baby. The embryo needs food and oxygen to grow. It also needs protection. Foetus: after about eight weeks, when the main structures and organs have formed, the embroy is called a foetus.
  • 12. Birth labour Contractions Caesarean section Belly button weigh premature incubator lactation nourishmentInfant formula
  • 13. Birth The process of giving birth is called labour. The involuntary muscles produce contractions in the uterus. The sac containing the foetus breaks. The liquid around the foetus is expelled. Dilation: the opening of the vagina dilates so that the baby ca come out. Birth: the baby leaves the mother´s body. Afterbirth: the placenta is expelled. If the labour is difficult or dangerous for the mother or the baby, doctors perform a Caesarean section to take the baby from the mother´s uterus.
  • 14. Newborn babies When a baby is born, the umbilical cord is cut. The mark left is called a belly button. Newborn babies are about fifty centimetres long and weigh about three kilograms. Babies born before term are called premature. Premature babies are kept in incubators, where they can develop and grow stronger.
  • 15. Lactation Lactation is the period when babies get their nourishment from their mother´s milk. If a mother cannot produce milk, infant formula is used. It is made from modified cow´s milk or soya milk. Breast milk is best, but formula provides many neccesary nutrients.