The
____________________
system's
most
important
mission
is
to
expel
____________________
substances
from
our
bodies
.
The
excretory
system
is
formed
by
the
____________________
system
and
by
the
____________________
____________________
.
The
urinary
system
is
formed
by
the
following
organs
:
-
____________________
:
are
in
charge
of
filtering
____________________
to
eliminate
waste
substances
which
are
in
it
.
-
____________________
:
are
two
tubes
which
come
from
the
kidneys
and
take
____________________
to
the
bladder
.
-
____________________
:
is
a
bag
where
____________________
is
stored
.
When
the
bladder
is
very
full
,
we
go
to
the
bathroom
and
we
expel
the
urine
through
the
____________________
.
-
____________________
:
is
the
last
part
of
the
urinary
system
.
The
sweat
glands
regulate
our
body
____________________
as
a
principal
function
and
for
this
they
produce
____________________
.
Being
made
fundamentally
from
____________________
and
waste
substances
,
it
also
has
an
excretory
function
.
When
we
sweat
,
the
sweat
brings
to
the
exterior
,
a
lot
of
waste
substances
.
Sweat
glands
,
are
distributed
around
all
our
____________________
,
and
sweat
comes
out
through
some
very
small
____________________
in
our
skin
called
____________________
.
