Endochondral
ossification
and
intramembranous
ossification
are
both
ways
that
fetal
bones
are
developed
.
Both
types
of
bones
are
remodeled
later
.
After
remodeling
,
cannot
tell
which
type
is
which
.
____________________
____________________
starts
with
formation
of
____________________
membrane
.
Ossification
begins
at
8
weeks
of
gestation
,
and
is
completed
by
two
years
.
Some
examples
are
the
____________________
and
____________________
bones
.
The
steps
are
the
formation
of
____________________
____________________
which
is
collagen
fibers
and
cells
.
These
cells
differentiate
into
osteoblasts
that
surround
fibers
and
make
the
matrix
.
____________________
is
made
and
more
layers
are
laid
on
the
trabeculae
.
They
interconnect
to
form
cancellous
bone
.
Spaces
between
for
red
bone
marrow
.
Cells
on
perimeter
of
bone
differentiate
to
form
____________________
.
____________________
under
periosteum
lay
down
____________________
____________________
.
____________________
begins
in
ossification
centers
.
Membrane
spaces
between
ossification
centers
are
called
____________________
.
