Questions- Locomotion and Movement Video Lecture - NEET

hello friends this video on locomotion
and movement part 19 is brought to you
by exam for calm no more fear from exam
so with this we have reached towards the
end of this lesson and I hope that this
lesson on locomotion and movement would
have helped you now as I start it is
time to look at some of the questions so
question number one right true or false
if words change the statement so that it
is true the first one actin is present
in thin filament yes
actin is the thin filament so it is true
and myosin is that thick one H zone of
streeted muscle fiber represents both
thick and thin filaments no eight zone
is that central portion of the filament
which has only the thick filament it
does not have the thin filament so H
zone only has the thick filament so this
is false so if you look at it this is
the H zone so if you see it has only the
thick filaments not overlapped by the
thin filaments human skeleton has 206
bones absolutely true there are 11 pairs
of ribs in a man it is not 11 rather it
has 12 it is 12 pairs of ribs as I said
the first seven I am going to be the
true ribs the next three are going to be
the false ribs and the last two are
going to be the floating ribs sternum is
present on the ventral side of the body
yes true
this is Turnham this spot has Turnham so
it is true let us look at question
number two right the difference between
actin and myosin red and white muscles
pectoral and pelvic girdle so I have
taught you about each of them let us
quickly look at the difference actin and
myosin actin forms the thin contractile
protein myosin forms the thick one actin
forms the isotropic band which is also
all to the hi
my ocean wants the an isotropic band or
the a bag actin is the light bank and my
ocean is the dark band so it is very
easy to distinguish between actin and
myosin in fact if I asked you to write
more differences I can you'll be able to
write them next is red and white muscles
you remember I told you there are one
set of muscles which are rich in a
pigment called myoglobin and due to the
presence of myoglobin they are red in
color whereas there are another set of
muscles which have less amount of
myoglobin and therefore they are pale in
color or white in color so red muscles
receive their energy by aerobic
respiration because they have a lot of
microcontroller and they also have
oxygen containing minor global whereas
white muscles receive energy by
anaerobic respiration because of lack of
myoglobin and also fewer mitochondria
being present pectoral and pelvic girdle
pectoral girdle connects the upper limbs
to axial skeleton that is hands and
pelvic girdle connects the lower limbs
that's the hind limbs pectoral girdle is
made up of two bones clavicle and
scapula
but as pelvic girdle is made up of two
axial bones which I made of Helium pubis
and is here the composition is different
for pectoral and pelvic girdle question
number three match column one with
column two so here you have column one
and column two smooth muscle so smooth
muscle is not related to myoglobin thin
filament sutures it is related to
involuntary because smooth muscles are
the involuntary muscles tropomyosin
tropomyosin is knitted to the thin
filament because tropomyosin is two
strands or two filaments of tropomyosin
are present or the actin filament which
is the thin filament red muscles contain
a lot of myoglobin so this will match
with myoglobin
skull skull has futures water sutures
sutures are the fibrous Joy
which are present in the sky because of
which there is no movement allowed in
the sky so sutures are present in sky
question number 4 name the type of joint
present between the following between a
class and axis so at last the first boon
of the first vertebrae of the vertebral
column so between Atlas and axis that is
the second one so because of this the
movement this movement of your neck is
possible
so this is which type of joint this is
the pre-boot joint or the promotor joint
next is carpal and metacarpal of thumb
that this is the reason why you are able
to move your thumb so between carpals
and metacarpals that are the saddle
joint between phalanges which helps you
to move your fingers so what type of
joints are present between the file
engines that is the hinge joint between
femur and acetabulum so this is femur
and this is the socket that is
acetabular what type of joint is present
the head of the femur is like a ball and
the acetabulum is like a socket so this
is ball and socket joint between cranial
bones so the bones of the skull because
of which the skull is not movable so
that is fibrous joints between pubic
bones in the pelvic girdle so where is
your pelvic girdle so perfect girl is
here so between the pubic bones what I
put is present that is ball and socket
joint now let us look at the last
question of this lesson fill in the
blank spaces all mammals except a few
have - cervical vertebra so most of the
mammals have seven cervical vertebra
including human teens the number of
financials in each limb of human is so
when you say each limb whether it is an
upper limb on a lower hip so how many
fingers
do you have in your each limp there are
five fingers right and out of that the
thumb has thumb has how many file inches
to all other fingers has three so they
had four other fingers so that would be
12 so 12 plus 2 that is 14 so the number
of managers in each limbus footing thin
filament of myofibrils contains 2f
actins and 2 other proteins namely - and
- so if you look at the structure of the
thin filament so this these two chains
these two are the F stacked ins that is
the filamentous actin so what are the
other proteins present this is a one
protein which is troponin and this is
another protein which is Tropo myosin so
the answer would be troponin and
tropomyosin in a muscle fiber
- iam ions are stored in where is the
calcium ion stored it is stored in the
sarcoplasmic reticulum beside Co plasmic
reticulum is like the endoplasmic
reticulum so it is present in
sarcoplasmic reticulum
so when whenever the muscle contraction
needs to be initiated these calcium ions
are given out or released from the
sarcoplasmic reticulum into the
sarcoplasm - and - pairs of ribs are
called the floating ribs the last pairs
of ribs that is the eleventh and the
twelfth pairs of ribs are called
floating ribs because they are not at
all connected on the ventral side
through the sternum the human cranium is
made up of - bones so how many bones are
present in the cranium that is there are
total eight cranial bones you remember
we spoke about the parietal bones
temporal bone so rocky beats and boom so
they all are those out of those
phones which form the human cranium so
with this we have reached towards the
end of this lesson and I hope that this
lesson would have helped you so please
go through the concepts very clearly so
that you are able to understand that how
actually movements take place inside
your bone
see you all to the next lesson thank you
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