Blood flows into the heart through the upper vena cava (1) to the
(2) Right at the then into the (3) Rich
heads for the lungs through the (4)
Once the blood
is circulated through the lungs (5) it returns to the heart through pulmonary veins
(6), into the (7)
through the (8)
and then out through the (9)
to all parts of the body.