2. DO YOU KNOW WHERE BABIES REALLY COME FROM?
DO STORKS BRING BABIES IN THEIR BEAKS?
3. HUMAN BEINGS
are living things
THEY PERFORM THREE VITAL FUNCTIONS
INTERACTION REPRODUCTIONNUTRITION
5 senses
Nervous
System
Locomotor
system
Digestive System
Respiratory System
Circulatory System
Excretory System
SEXUAL
2
organisms:
male and
female
ASEXUAL
1
organism
is required
4. Reproduction
It is the third vital function
The process by which living things generate or produce
new living things (offspring) so they cannot become
extinct.
Human being performs a sexual reproduction
5. REPRODUCTION
• What kind of reproduction do human beings
perform?
• What is the meaning of sperm?
• How do you call the female reproductive cell?
• What happen when sperm and ovum meet?
• How does the zygote progress/change to?
• How do you call the stage between childhood and
adulthood?
• What happen in the adolescence?
12. OVARIES
Produce female reproductive
cells called OVA. One Ovum
matures each month.
FALLOPIAN TUBES
They connect the ovaries
to the uterus.
UTERUS
It is an organ with muscular
walls. During pregnany a
fertilised cell develops into a
baby in the uterus.
VAGINA
It is a muscular tube which
connects the uterus to the
outside of the body.
VULVA
It covers the opening to the
vagina. It’s outside of the body.
FEMALE REPRODUCTIVE ORGANS
14. A menstrual cycle is a process that takes for girls and teens around 28 days.
THE MENSTRUAL CYCLE
If a sperm cell
does not fertilize
the ovum, the
unfertilized egg
will die and the
wall from the
uterus leave the
body.
In other words, a
girl has her
period and the
cycle begins
again.
Menstruation
The blood, tissue from the uterus
and not fertilize ovum leave the
body because it's no longer
needed. It comes from the uterus.
And the girl or woman has her
period.
After that, the brain
stimulates the ovum
in the ovaries to grow
and the wall of the
uterus will start
building up in case the
woman becomes
pregnant
Ovulation
About 2 weeks after the last period, another OVUM will be released from one of
the ovaries and begins a trip down one of the fallopian tubes to the uterus.
17. MALE REPRODUCTIVE ORGANS
Most male reporductive organs are external and
are located on the outside of the body
TESTICLE
VAS DEFERENS
SEMINAL
VESICLE
PROSTATE
URETHRA
PENIS
SCROTUM
18. HOW LONG DOES
PREGNANCY LAST?
It is the period of time from
conception to childbirth (9 months).
The state of being pregnant.
It is the act of giving birth.
The appearance of a baby from
the body of its mother.
PREGNANCY (noum)
GIVE BIRTH TO... (verb)
CHILDBIRTH (noum)
20. 1ST STAGE: FERTILISATION
The egg (ovum) is released into
the falopian tube (ovulation).
During the sexual act the sperm
are deposited in the woman’s
vagina. They use their tails to
reach the OVUM and ONLY ONE
SPERM can fertilise it (the ovum).
FERTILISATION
That union produces a cell called
ZYGOTE and starts to divide and
multiply.
21. 2nd STAGE: DEVELOPMENT OF
THE EMBRYO
After fertilisation, the zygote
travels to the uterus at the
same time it carries on
dividing until it becomes an
EMBRYO.
The embryo
attaches itself
onto the
lining (wall) of
the uterus
where it
continues to
grow.
After the 2nd month the embryo is
about the size of an adult’s THUMB
22. 1ST AND 2ND STAGE
2ND MONTH OF
PREGNANCY:
embryo
23. 3. The
FOETUS
receives
oxygen, food
(nutrients)
from the
mother’s
placenta and
it transfers
waste and
CO2 to the
mother via
placenta.
3RD STAGE: DEVELOPMENT OF THE FOETUS
1. After the
2th month,
all the organs
are formed
and the
embryo
develops into
a FOETUS
2. The
FOETUS is
floating in a
sac of
amniotic
fluid which
protect it
from impacts
4. The FOETUS is connected
to the placenta by the
umbilical cord
24.
25. The placenta is an organ that connects the developing foetus to the uterine wall.
The placenta provides oxygen and nutrients to growing babies and removes
waste products from the baby's blood. The placenta attaches to the wall of the
uterus, and the baby's umbilical cord develops from the placenta. The umbilical
cord is what connects the mother and the baby.
26. 4th STAGE: BIRTH PREGNANCY LASTS ABOUT 280
DAYS (9 MONTHS)
DURING
PREGNANCY
JUST BEFORE
THE CHILDBIRTH
•When the foetus is ready to be born, it pushes against the cervix, which
starts to open and widen.
•Babies are usually born head first.
•The umbilical cord comes out with the baby and this is cut and tied and
forms our navel or belly button.
Uterus
Cervix
