We
need
nutrition
in
order
to
keep
our
bodies
working
.
There
are
____________________
human
body
systems
that
enable
us
to
carry
out
the
vital
function
of
____________________
:
the
____________________
system
,
the
____________________
system
,
the
circulatory
system
and
the
____________________
system
.
The
digestive
system
:
breaks
down
the
____________________
we
eat
into
smaller
____________________
that
our
body
can
absorb
.
The
esophagus
,
____________________
and
the
____________________
are
organs
of
the
digestive
system
.
The
respiratory
system
:
absorbs
____________________
into
the
body
and
releases
carbon
____________________
.
The
____________________
and
the
____________________
are
organs
of
the
respiratory
system
.
The
circulatory
system
:
transports
____________________
all
over
the
____________________
.
The
____________________
and
the
____________________
vessels
are
organs
of
the
circulatory
system
.
The
excretory
system
:
eliminates
the
____________________
our
body
produces
.
The
____________________
and
the
____________________
are
organs
of
the
excretory
system
.
