____________________
blood
enters
the
____________________
____________________
from
the
vena
cava
IT
then
passes
through
a
valve
to
the
____________________
____________________
The
____________________
____________________
transports
the
deoxygenated
blood
to
the
lungs
Gaseous
exchange
occurs
,
resulting
in
____________________
blood
The
____________________
____________________
transports
oxygenated
blood
from
the
lungs
to
the
____________________
____________________
It
then
passes
through
a
valve
to
the
____________________
____________________
____________________
____________________
is
ejected
from
the
heart
and
is
transported
to
the
body
via
the
____________________
