RBC & WBC : Red, white blood cells- Body Fluids and circulation, Biology, Class 11 Video Lecture

hello friends this video on body fluids
and circulation part 3 is brought to you
by exam feel calm
no more fear from exam so with this let
us now talk about the next I'm going to
bless the red blood cells or the air
through size or a disease what are you
call them so these are the most evident
cells the blood so they are present in
huge numbers what device they are huge
so almost 5 million of our disease are
present in one microliter of that just
imagine one microliter that is almost 10
to the power minus 6 liters so just
imagine how much that much want to be of
blood will have 5 million pisces so just
look at their awareness these are small
cells without urea so that is an
important point to be noted here that
these are a mutated cells because they
do not have a nucleus and also if you
talk about their shape they are by
concave in shape they want to be mean by
biconcave shape now how can I sell have
a biconcave shape you remember we spoke
about the mirrors in our physics a
concave mirror convex mirror we spoke
about lens concave lens quantex lens so
there we have spoken about the by
concave lens and this is how a biconcave
lenss look like right so both the
surfaces were concave invasion so these
cells also they have shapes of more like
this so if you look at your sideways you
will see that here there is one dumb
Indianism 1/2 and then will they give a
by one clink ship they carry oxygen from
lungs to different parts of the body now
these red blood cell
other ones which I printed the name
except such as that they are raining
planet and their red button is due to
the presence of the red paper into our
hemoglobin and hemoglobin helps in carry
oxygen or transport of oxygen you guys
have to be discussed about the transport
of oxygen by hemoglobin right so that is
these red blood cells contain hemoglobin
and hemoglobin helps to carry oxygen by
formation of oxygen or oil so that we
helps to transport oxygen from lungs to
different parts of the body it contains
that a spirit if equipment in your low
beam which has affinity for oxygen and
that is why they form the compound boxy
people going now it has been also
working and healthy adults there is
almost 12 to 16 grams of hemoglobin
which is present in every hundred
milliliters of blood so that is quite a
good number so 12 to 16 grams of mo
glowing is present in hundred milliliter
of blood so now the question is where
are these red blood cells produced now
these red blood cells are produced the
bone marrow from stem cells now this
might be an intermodal net what is a
stem cell the stem cells are the
specialized and blinding cells the very
beginning with the emperor io4 we should
take these so then you have the stem
cells
their speciality is that they have the
potential to develop into any type of
tissue in the body now if you talk about
the different types of tissues which are
present in the body there are so many
different types of cells present in the
body right for example if you talk about
the nerve cells that is the neutrons
they are so different from the from all
of the cells again you talk about the
liver cells they are also quite
different you talk about the IPC's or
the WBC is even they are different from
each other so that means different cells
of the body of the different tissues
which are present in the body they are
all different from each other but the
speciality of these embryonic cells is
that they have their potential to
develop into any type of tissue in the
body so these stem cells to choose red
blood cells in the bone marrow so that
is their origin in fact the stencils
produce the white blood cells also
nursin as I said quantity wise the RBC's
are like a barnett there are a lot of
RBC's present in our body but if you
talk about this size they are very small
in size and this small size enables them
to travel extremely thin capillaries so
when we talk about the process of
circulation and then you will see there
are many into light structures present
inside our body through which the blood
flows so there these red cut cells are
able to feel to them because they are
extremely small otherwise such big tubes
they would have not been able to move
from one case to another they have an
average lifespan of 120 days that is
they live for my 20 days after which
they die and they generally die in the
splint so where is the splint so splint
is an organ which is located
it quite close by to the liver so here
you can see this is the this structure
is the spleen
so this in this order this order acts as
a burglar filter that is it helps to
filter the blood it tries to remove all
the impurities or foreign substances
from the blood and it also acts as a
storage is for blood cells it helps you
store the blood cells
now since the IDC is dying here so you
can also call it as the graveyard of
IPC's because it is the place where the
RDC is dying so this is above the
structure and of RBC so they the most
important function which red blood cells
performance that they help in transport
because they are very small in science
so they can actually travel through very
extremely thin tubes also and that means
they help to transport the substances
from one point to another another
function is that they contain hemoglobin
and which has an affinity for oxygen so
hemoglobin helps in the transport of
oxygen and carbon dioxide to and from
different parts of the body so transport
is the main purpose of the red blood
cells
now the next category of kampala next
component of blood is the WBC that is a
white blood cells now WBC's our lesson
in number when compared to the red blood
cells as I said here red blood cells
where too much abundant so here if you
look at your out there around 4,000 to
10,000 WBC's present for micro liter of
blood if you compare it with the red
blood cells they were present in
millions and now here it is in thousands
so there is a huge difference so that is
quite less than
when you compare your irises now you
also gotta prove about age when you
looked at the blood sample after
centrifugation we saw that red blood
cells constituted almost 45% of the
total blood volume whereas the WBC's
which was present in the Buffy coat it
was not even one person so there from
there also we could guess that the
number of WBC's would be very small when
compared to the number of RBC's present
in our body
these are nucleated colorless cells so
they have nucleus so that's why they are
nucleated cells they are colorless they
do not have your color because did not
have an equipment which can impart our
color like in case of our disease since
they have you will know in that is why
they are red in color but in white blood
cells they do not have any pitch to
impart them in color and that is why
they are colorless now if you talk about
the presence of WBC they are not limited
to blood alone so it is wrong that their
present ruling Engler they are also
present in other parts of the body for
example they can't be found in the liver
they can also be found in the lymph
glands or in the screen so these are
some of the other places where the bbc's
are formed they help fight in fact help
fight infection and builds the immune
system of the body so that is the main
function of them WBC that is the type
that sells the help to fight against any
sort of infection so they are like the
sewerage use of our bodily protect our
body from a kind of infection for
example sometimes you will see that
maybe there is some bacterial infection
in your body because of which you are
getting some fever or something if your
immune system is very strong that means
the body will try to protect itself on
its own you don't really need to take
medicines so however if your immune
system is right
and that is you will be more prone
before the sick and you will be required
to take more medicines so these white
blood cells actually help to build up
your immune system by fighting against
all type of infection now I'll do the
fight against the infection how do they
remove the foreign particles divide to
the unknown or stranger protein
structures on that a virus or fungi and
so that they can be removed so they have
this capacity or they have this
potential to combine with a strange
proteins present on the morning of the
other microorganisms now once they
attach it to them and then they I can
remove them now there are many different
varieties of white blood cells which
exist as you can see in this picture
there are so many different shapes and
sizes so they actually exist in a
variety of shapes and sizes however they
have been divided into few types we will
quickly look at the different types of
white blood cells they live for 3 to 4
days in human body so their longevity is
also very different when compared to the
eye disease now our base is had an
average lifespan of almost 120 days and
now these are only 3 to 4 days which is
quite less so that is why it is said
that when the immune system of your body
is spoiled that means not enough
wbz's are present in your body so you
are more prone to fall sick let us
quickly discuss the types of WBC's there
are broadly two types of white blood
cells granulocytes and a granulocytes so
let us see what does each of them
granulocytes
are those which have something like
something related inclined you granules
so they have some granular structures
and
why layer granulocytes they are further
divided into three types neutrophils
eosinophils and basophils and a
granulocytes i again for the divide into
two types that is lymphocytes and
monocytes so let us quickly discuss
about each of these types of WTC so
we'll first start with neutrophils the
neutrophils are the most abundant WBC's
and they are phagocytic in nature what
is the meaning of phagocytic that means
they kill the oil organisms which enter
the body
phagocytic means just remember the
phagocytosis the storm it is it means to
kill somebody so it kills the foreign
particles so that is how they help in
protecting your body against infection
use and opals are less abundant when
compared to large neutrophils nor
percentage-wise if you look at their own
governance neutrophils constitute about
60 to 65 percent of the total white
blood cells so if there are total
hundred white blood cells then out of
that 65 you are going to be neutrophils
whereas your smokers are very less
committed so if you look at the
percentage of use locals it would be
somewhere around 3 to 3 percent that
means if there are 2 200 WPC is only two
or three of them are yokels and all
these use locals help to fight
infections or allergic reactions so that
is how they help you to protect against
diseases her mind is based opens and
they are again the least abundant
degrees so there was intention is even
lesser than the usual others and they
are involved in that in elementary
reactions so if you look at the
different types of WBC you see all of
them help to protect your body and some
me or the other some of them kill
microorganisms or foreign particles some
of them help to protect you against
infection and inflammatory reactions now
that is look at the aur you know sites
so we'll talk about William full sites
so these are responsible for their
immune responses of the body that is how
our body respond in needs of immunity
there exists two forms of lymphocytes
that is B and t-lymphocytes now these
lymphocytes are the cells which are
present in the lymph so these type of
WBC's are present in the liver where
exactly they live with the lymph nodes
we are going to talk about lymph also
after we finish our discussion on blood
so there we will see the presence of
lymphocytes so these lymphocytes help to
purify the blood that is they help to
remove the impurities which might be
present in the fly so these are the two
forms of lymphocytes B lymphocytes and T
lymphocytes now we will not get into the
detail of B and t-lymphocytes and the
last type of white blood cell is
monocytes so these are again phagocytic
in nature that is they kill foreign
particles directly so in this picture
you can actually look at the different
types of white blood cell the first one
is neutrophils thanks to sluicin open
and then the third one is base often
followed by emphasize and monocyte if
you see the shape of all of them are
quite different from each other that is
why we see that the different types of
white blood cells exist in a variety of
shapes and sizes
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