The bones belong to the skeletal system.
Teeth are not organs, they are bones. I do not know if that helps a lot, but I do know that teeth are bones.
The organ system that the pancreas belongs to is endocrine
nervous system
nervous system
long system
the kidney belongs to the osmo-regulation and the excreatory system.
The brain belongs to the Nervous system. It is the only major organ in that system.nervous system
The bones belong to the skeletal system.
digestive
Digestive
An organ system is greater than the sum of its parts (organs). So an organ, by itself, can do nothing without the Organ System to which it belongs.