Introduction to Human Reproduction Video Lecture - NEET

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reproduction part 1 is brought to you by
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topics to be covered in this list are
the male reproductive system the female
reproductive system gamut of Genesis
menstrual cycle fertilization and
implantation pregnancy and employment
development and maturation and lactation
here in this lesson we had exclusively
going to talk about how the production
take place in human beings like in our
previous lessons in previous two lessons
we spoke about the basics of the
production we saw how what are the
different ways by which reproduction can
take place like good sexual code as well
as asexual Coon we also spoke about how
sexual introduction take these implants
so here in this lesson we will see
exclusively how the process of the
production will take place in human
beings
so as the automatic production is the
process by which living organisms
produce new organisms similar to
themselves so that's right so here while
we discuss this lesson we are in time
going to talk only about human beings so
no other animals so in case of human
beings we all would have seen that we
all are given birth by our parents right
so basically the mother gives birth to
the baby and that is how the process
continues and that is how more and more
human means I produce produced on this
earth so that is the process of
reproduction for human beings so in this
lesson like how we see it is not only
something which is very exclusive to
human beings it happens in all animals
whether you talk about giraffe and
officials birds in say so everywhere the
production is there but we are going to
focus on how human reproduction
of course because the basic concept of
sexual reproduction will remain the same
everywhere the same our events which we
have discussed in our first lesson where
you have a gametogenesis four followed
by a gamete transfer that fertilization
and then the embryo development so those
steps will be common to all the animals
but the difference lies in the structure
of the reproductive system the way a
human body is organized their
reproductive system is going to be a lot
different from that a productive system
of other animals officials a giraffe or
elephant right ok so let us exclusively
start discussing sexual reproduction in
humans now in human beings we know that
as far as the process of reproduction is
concerned there are two modes of
reproduction sexual reproduction and
asexual reproduction so in sexual
reproduction to parents are needed that
is a father and a mother
your parents are needed there is an
asexual reproduction you just need one
parent and then one panic and give rise
to new organisms but in human beings
sexual reproduction is the only mode of
reproduction so this is the only mode so
there is no asexual reproduction in
human beings so whenever you talk about
reproduction in human is you always need
two parents so you need a mother and a
father and both of them together will be
able to give birth to a young one
whether it is a boy or a girl so we here
we will see how this thing it actually
happens now the first question that
comes to our mind is the human beings
can undergo sexually production but does
that mean that they can sexually
reproduce throughout their life
obviously not we discussed about the
three phases in the life of every
organism whether it is a plant or an
animal
or human needs so you have a juvenile
phase and then a reproductive phase and
finally the aging phase correct
so in human needs also you have a
specific reproductive phase and in that
reproductive phase only the human being
is capable of reproducing were capable
of undergoing sexual reproduction so
within that regards we will talk about
puberty so what does p would be it is
nothing but another term word
adolescence so you will see that when
when a baby is born it is too small
right and then the baby starts doing it
increases and height increases and wait
itself all the body parts start
increasing or growing for opportunity
but after a certain age the physical
growth stops but the reproductive growth
starts and that is when you say that the
guy or the girl is actually transforming
into an adult so that intermediate
fields between your childhood and
adulthood is known as a doll essence so
that is also known as puberty so it is
the period during which the rate of
general body growth slows down so that
is really when you say general body
growth you mean the increase in wage
increase in height those kind of things
so they are slowed down so not too much
of growth in those aspects
however the reproductive tissues start
Manchu ru so that it productive parts of
the body start getting mature so they
start getting prepared themselves so
that they can enter into the
reproductive phase so that this phase in
human names is stunned as adolescence or
puberty so the period a man at what age
does a person enter into adolescence
now this differs in case of males as
well and in case of females so if you
talk about a human male they generally
reach their puberty at the age of around
13 to 14 years
the picture you can see that this is a
small boy he is actually a kid but when
this is this small boy he reaches and is
around 13 14 years old you actually tend
to see some of the changes in that boy
which says that he is gradually trying
to enter into attitude and that feels
when his changes start appearing for the
first time that is the Adam innocence or
through party saying it mean it comes
around when the person is 30 to 40 years
old however these are females it comes a
little earlier so when the female is
around 11 to 13 years old that I'm
certain changes are being seen so you
can see this small girl however this is
messed up
this is not a small world the girl is
actually entering the adult field so you
can actually see there are certain
changes even in the physical appearance
of the person when she or she enters
into adolescence now the question is how
do we know I mean what are the changes
that actually take place inside the body
of the person when he or she enters
puberty so let us quickly look at the
changes which are generally seen in in
an individual when he or she reaches
puberty so first let us talk about a
male so one of the changes that SiC that
actually depicts that a guy is entering
from the childhood phase into the
adolescence see hair growth under
armpits and genital area so two people
in and surrounding of the genital area
there is quite thick hair growth also
under the armpits facial hair appearance
of hair on the face because you would
have seen that if you look at babies
whether it is a baby boy or a baby good
there there is no hair on their body not
much hair on their bodies position on
the face on the face whether it is a
baby boy or a baby cur they do not have
any hair but when you look at an adult
an adult
and a woman you see a woman they do not
have much hair on their face but men
they do have help
so this appearance of facial hair starts
when the man but the person reaches his
puberty changing voice because the voice
becomes more hoarse when compared to
what it was when he was a kid occasional
pedis enlargements of the pennies tend
to get enlarged and certain times
similarly in case of females also you
see a certain changes for example start
of menstruation cycle so every 28 days
there is a bleeding which takes place
through the vaginal opening so what is
this bleeding what is menstruation cycle
we will talk about that words now as you
go ahead with this lesson so this change
start this is a major change which start
which starts in a female and this is
that she is entering into the
reproductive phase breast enlargement
appearance of the breasts this this also
gets accompanied with the menstruation
cycle hair growth and their armpits and
genital area so these are some of the
changes which actually tell that a
person whether a male or a female is
reaching puberty or adolescence now once
they entered adolescence that means that
they have entered into the reproductive
stages of their life so once a human
being is into the reproductive phase
then he or she is capable of undergoing
sexual reproduction so this is the
timeframe when a female is female is
more than 11 or 13 years old and Emile
is wrong 30 14 years old so generally by
that handed each adolescence and after
that they enter into the reproductive
phase of their legs so now it is look at
the process of the sexual reproduction
that is how the sexual reproduction
actually take place now from our
knowledge of the basics of sexual
reproduction we know that it is nothing
but a series of a couple of events like
the first thing is gametogenesis now
available
about sexuality production want to be I
mean what do we say we say that in
sexually production that we need a male
we need a female and there will be
damage being produced from both the male
and the female that those gametes will
fuse together to form a new organism
okay so now in order that the gametes
have to fuse first of all the
government's need to be produced and
that is what happens and gametogenesis
that does this is the stage where
gametes are formed the male gamete and
the female gametes are formed
now once the gannets are formed then the
Gammons need to meet in order to fuse so
that transfer of gametes so that they
both can mean and they can fuse together
that is that comes under damage transfer
then happens the fertilization that is
the main step of sexual reproduction
so in this fertilization step the actual
fusion between the male gamete and the
female gamete takes place and this in
turn is followed by the formation of as
I got now when the male gamete and the
female gamete fuse first of all the male
gamete and the female gamete we have
formed now the male gamete and the
female gamete are transferred in such a
way that they both meet now once they
meet the male and the female gamete they
fuse together now one day once they fuse
together they form a new cell which
responds I got then what happens to X I
got that zygote has to gradually grow
and develop into an embryo and that
employer should gradually develop into a
new individual so these are the four
steps which completes the entire process
of sexual interaction in human beings
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