L14 Embryo Development - Reproduction in Animals, Science, Class 8 Video

hello friends this video under
production in animals part 14 is brought
to you by exam for calm no more fear
from exam so now we will talk about the
a priori glücklich here you can
distinctly see the structure plastic as
the umbilical cord and you will be able
to understand how we apply or develops
first of all what is an embryo
it is a developing zygote which
undergoes repeated divisions to form
tissues of the body as I said the
process starts with the zygote which is
just one cell it undergoes many
divisions to form collection of cells
and then out of those multiple cells few
cells combine together to form specific
tissues of the body some again some
tissues will combine together to form
specific organs and that is how the
entire organism will perform so this
embryo is a later stage of the zygote
where when we have multiple tissues of
the body
so as you can see here when it reaches
the uterus where you actually see that a
lot of cells have already been present
there we call it no more as I got but an
empire so the question is what supplies
nutrition to the embryo so as I said
embryo also needs nutrition to grow so
there comes class and supply center is a
flat round structure which is formed
like this - here you can see classes
available here in the brown colored
structure so this is made up of
specialized tissues and it connects the
fetus with the uterine wall of the
mother uterine wall is nothing but the
wall of the uterus so if you see this is
uterus this entire structure which you
see is the uterus so here the this is
the mother's body and this is
baby so this tube-like structure which
you see here the vortex structure this
is the umbilical cord so this um people
who are arises from the baby's body and
it connects itself to the classic time
the placenta is connected to the uterus
wall of the mother so through this
lesson and the umbilical cord all the
nutrients are passed on from mother's
body to the child's body and this is
with this new tree nutrients thing their
feeders keeps on growing and that is why
it is on this advice that a pregnant
woman should eat well she should eat a
nutritious diet because she is not only
feeding herself but she is also feeding
the embryo which is developing inside of
her body so exactly how things happen is
like the fetus this is the fetus in the
fetus body there is a tube like
structure which arises as you can see
here so this is the umbilical cord so
this umbilical cord is connected to the
clasp and down which is a specialized
tissue which connects the fetus with
mother and this placenta is connected to
the uterine wall of mother uterine wall
of money so that's how the developing
embryo gets its nutrition so all the
nutrients coming to the fetus from the
mother's love and all the waste product
go out from the fetus into the mother's
blood because the fetus right now will
not have specialized systems like
excretory system digestive system etc
will be not that developed
therefore all the food will come from
the mother's body and all means products
will get into the mother's body and then
those waste products will go out of the
mother's body through her excreting
system so this is how the development of
the embryo takes place so when we talk
about the am vehicle cord it is nothing
but the neighbors chain so you have seen
from
navel of the baby this team develops
that is why when a baby is born the
doctor will cut the string and therefore
you will see that the navel portion of
the baby will have a different structure
which goes out on its own after a few
days so that is because of the umbilical
cord so it arises from the fetus abdomen
and connects to the placenta so I hope
this concept of placenta and umbilical
cord is clear so the question is okay so
now we know that the embryo keeps on
developing so when do we know that now
the baby is ready to be born so when is
the time for the baby to come out of the
mother's body now as I said that the
development of the baby takes place
gradually so the embryo develops various
body parts and then a fetus and spot so
initially immediately after
fertilization waters for zygote which is
a single cell structure which will later
undergo multiple divisions repeated send
if you should perform multiple cell
structure and later it forms the heme
prior so a table of cause I got cut off
is called M prior when this embryo has
developed the various body parts like
the hands legs and everything is
developed then it is no more while an
embryo instead it is called a fetus now
this for the complete development of the
fetus it takes nine months so it is not
always exactly nine months sometimes it
is even with the fetus is fully
developed by a twelve also so once it is
fully developed then the baby is
delivered
now when I say various body parts I mean
like hand legs heart eyes ears fingers
etc so some body parts make heart they
develop first whereas other parts like
fingers or knees or hair they develop
later and then finally this baby comes
out through the vaginal opening now how
will such a big huge baby will come out
through the small opening that we caught
that is possible due to the a
contraction
an expansion of the walls of the uterus
because the universe has muscular walls
so these muscles will contract and
expand it will push the baby in this
direction and finally the baby will come
out through the vagina thank you
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