Our Skeletal System: The Bones Video Lecture | Study Science Class 6 - Class 6 | Best Video for Class 6

skeletal system
this is a human skeleton just a model of
human bones don't get scared
let's learn about the skeletal system
every person has a skeleton built up of
so many bones these bones give your body
structure protect your internal organs
let you move and much more the adult
human body has 206 bones and an infant
has 300 bones this has become some
smaller bones combined together and thus
form bigger bones
ah now look closely here this is our
skull it carries our brain and also
supports our face it protects the brain
from knocks and bumps we have a very
small bone in our ears the stirrup it is
a smallest bone of our body about 2.5 to
3 point 3 millimeters only these are
called the clavicle our shoulder bones
or collarbone there are two clavicles
one on the right and one on the left it
is the only long bone in the body that
lies horizontally now look at this it's
a sternum a long flat bone oh did you
notice it's shaped like a necktie it's
located in the center of our chest and
this cage like thing is our rib cage our
heart and lungs are behind these bones
so you can say rib cage is the curved
wall of ribs that surrounds and protects
our heart and lungs now look at the
bones of the hand this bone in the hand
is called the humerus the long bone of
the upper arm extending from the
shoulder to the elbow there are two more
long bones in our hands radius and ulna
they form the lower arm and these bones
in the palms ah these over here are
called the carpal
metacarpals and phalanges now let's see
the back of this look it's not a single
bone it is built of 33 small bones
called vertebrates and this whole
structure is known as the spine the
spine helps you twist and Bend also it
holds our body upright you know look at
this see this is the pelvic girdle it
protects the bladder and uterus the
longest and strongest bone in our body
is the femur and these two bones in the
lower leg are fibula and tibia these
over here are the tarsals metatarsals
and phalanges it's hard right human bone
is made of collagen mostly it is a
protein that is woven into a flexible
framework
it also contains calcium carbonate
calcium phosphate and minerals that have
strength and heart in the frame
the combination of collagen and calcium
gives the bone its flexibility and
strength you know a lot about the
skeletal system let's go home we should
take proper care of our bones we should
do exercise running dancing jumping and
we should play outdoor sports
it makes our bones strong you know if
your body doesn't have enough calcium it
will take it from your bones making your
bones weaker ah huh good reason to drink
milk protect those skull bones by
wearing a good helmet for bike riding
skating and other sports bye bye