The
____________________
____________________
is
the
____________________
most
layer
and
lays
directly
on
the
surface
of
the
brain
and
attaches
directly
to
the
brain
and
spinal
cord
.
It
is
filled
with
cerebrospinal
fluid
,
and
protects
blood
vessels
.
The
____________________
____________________
is
the
____________________
layer
that
has
a
spider
web
like
appearance
.
It
possesses
arachnoid
trabeculae
that
projects
into
the
pia
mater
and
reabsorbs
the
CSF
to
the
blood
.
____________________
____________________
,
the
____________________
most
layer
consist
of
____________________
layers
the
____________________
and
the
____________________
layers
.
The
____________________
____________________
folds
inward
to
form
several
double
thickness
sheets
known
as
____________________
____________________
,
which
helps
hold
the
brain
in
place
.
Lastly
,
the
____________________
____________________
adheres
to
the
internal
surface
of
the
cranium
and
for
majority
of
its
course
lies
directly
touching
the
____________________
layer
.
Meningeal
vessels
course
between
this
layer
and
the
cranium
.
