becuse you need it to help you breath
The heart
The heart is an organ.
the heart is an organ while it is a part of the circulatory system
Cause its a organ that never stops beating
The human heart can be considered either a muscle or an organ depending on what you are studying or what field of work you research for. i watched this recently on the health and fitness channel, the heart is a big muscle.
Nope. The human heart is a muscle not an organ.
It is an organ. The heart belongs to cardio-vasculary organ system.
Its an organ
The vena cava is the biggest artery in the body that is attached to the heart, so i would say the cardiovascular system.
the heart is its own organ if you mean system it is part of the cardiovascular system.
The heart is an organ
no the heart is an organ