All bodies have multiple organs. So, all bodies have organ systems.
Organ Systems Apply Differently To The Bodies Of Multicellular organisms
Streamlined Bodies
The organ that is shaped like a triangle is the LIVER.
The liver is the largest internal organ. Skin is the largest external organ, however, it is considered the human's largest organ.
the skeletal is one of the bodies
yes
heart
heart
Bones and teeth
It is not legal in any country to sell human bodies, but in some countries organ trade is not frowned upon.