The
blood
delivers
____________________
to
the
cells
while
also
____________________
carbon
dioxide
.
____________________
and
exhaling
brings
the
oxygen
in
and
the
carbon
dioxide
____________________
of
the
lungs
.
the
lungs
are
made
up
of
____________________
which
helps
create
a
two
way
diffusion
in
the
lungs
.
air
is
drawn
in
through
the
____________________
or
mouth
then
passes
through
the
____________________
and
larynx
of
the
____________________
respiratory
tract
and
continues
through
the
lower
respiratory
tract
(
trachea
,
bronchial
tree
,
and
____________________
)
.
