The heart is a hollow muscular organ functioning as a force and suction pump to circulate blood through the blood-vascular system.
(The heart; is; a hollow muscular organ functioning as a force and suction pump) (a hollow muscular organ; functioning; as a force and suction pump)
The heart a hollow muscular organ
is functioning
a hollow muscular organ functioning as a force and suction pump
as a force and suction pump