Skeletol system CBSE Science Lesson Class 6th Video Lecture

the system made up of bones and
cartilage is called the skeletal system
the skeletal system provides shape to
the body provides the framework that
supports the body and keeps it upright
protects the soft internal organs like
the heart stomach and the liver blood
cells are made in the soft substance
presently bones which form the skeleton
a skeletal system consists of bones and
cartilages cartilage are soft and
elastic tissue attached to the bones it
protects the bones and also helps them
to move it gives shape to certain parts
of a body like here pinna and nose the
human skeleton consists of skull it is
made up of 22 bones oral bones are fixed
and joined except the lower jaw the
lower jaw can be moved and allows us to
chew food eight bones form the brain box
and 14 from the shape of face the
vertebral column is made up of 33 small
bones called vertebrae the vertebral
column also called the spine or backbone
runs along a back starting from the neck
each vertebrae has a cavity in its
center through which passes the spinal
cord the ribcage are thin flat curved
bones that form a protective cage around
the vital organs like heart and the
lungs often called a ribcage there are
12 pairs of ribs one on each side of the
body each rib joins the backbone at the
back and the chest bone in the front
girdles are attached to the backbone and
gives support to the bones of the limbs
there are two girls in a body the
pectoral girdle and the pelvic girdle
the pectoral girdle is also called a
shoulder bone it supports the bones of
the arms and joined to the collarbone it
helps the movement of the shoulder and
pelvic girdle is also called the hippo
and is made up of three bones fused
together the leg bones are attached to
it it forms a bowl like structure on
which the body wrists and is the
strongest part of the body the upper
limbs it has a single bone called
humerus joined to the pectoral girdle at
the elbow humerus joins two bones radius
and ulna wrist is made above small bones
called couples the hand joins a wrist
and is made up of many small bones the
lower limbs the thigh bone or the femur
as the longest bone of the body
it's joined to the pelvic girdle on one
end and me on the other do you know
there are 206 bones in the human body an
infant has more than 300 bones later on
many gets fused largest bone of the body
is FEMA and the smallest bone is the
stapes Gerardo has only seven bones in
its long neck like us thank you to know
about joints click on the link provided