The reproductive system. All the others have a function important to the body; all the reproductive system does is... well, allow you to procreate, and make you look either masculine or feminine. Without a reproductive system, you'd look weird, but nothing else.
Isn't there just one organ system(in each body :p) ? O.o
spleen
we need study the human organ because this our human body
The group of organ systems organized from most complex to least complex typically starts with the nervous system, then the circulatory system, followed by the respiratory, digestive, excretory, endocrine, and finally the integumentary system.
skeletal
Circulatory System, and the nervous system are the two i can think of.
So an organ does actually makes an organ system so if an organ gets damaged the organ system will stop functioning so it will completely be useless
The correct relationships from least complex to most complex are: atoms, molecules, organelles, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystems, biosphere.
I need answer please
The appendix is considered the least important organ in the digestive system. It is a small organ located near the junction of the small and large intestines and its function in humans is not well understood. In some cases, removal of the appendix does not lead to any significant digestive issues.
YES it is an organ system?
no they are to small to have a respiratory system or organ so they breath through there cell membrane