Cardiovascular
system
a collection of organs
whose primary function is
to transport blood to and
from your body's cells.
Digestive system
a collection of organs
that break down food so
that it can be used by the
body.
Lymphatic system
a collection of organs whose
primary function is to
collect extra-cellular fluid
and return it to the blood.
Respiratory system
a collection of organs
whose primary function
is to take in oxygen and
get rid of carbon dioxide
Urinary or
Excretory system
a collection of organs
that remove waste
from the blood.