The
____________________
____________________
is
composed
of
quite
a
few
parts
.
First
is
the
____________________
,
which
is
an
elongated
flat
bone
forming
the
middle
part
of
the
anterior
thoracic
wall
.
It
is
composed
of
three
parts
,
the
____________________
(
which
is
the
____________________
portion
)
,
____________________
(
the
____________________
portion
)
,
and
____________________
____________________
(
the
____________________
portion
)
.
The
____________________
are
also
a
part
of
this
cage
,
____________________
-
____________________
attach
anteriorly
to
the
sternum
through
strips
of
____________________
____________________
and
are
known
as
____________________
ribs
.
____________________
-
____________________
are
____________________
ribs
that
only
attach
to
the
____________________
cartilage
.
____________________
-
____________________
do
not
attach
to
anything
are
known
as
____________________
ribs
.
