skeletal digestive muscular endocrine circulatory nervous reproductive urinary respiratory integumentary
I saw this and thought to myself, "Oh finally, an anatomy topic for the people!" Then I tried to verify that there are indeed 10 organ systems in the human body and got into this whole classification mess because no one can agree on how many systems there are or that these are some kind of "top ten". Some sites I found said there were 9 major systems, some 11, some 13. Oh well. If you like these 10, here's a mnemonic.
Slimy drugged mean esoteric chickens nudge repetitive ugly red inchworms
Scary distasteful magenta external cubes navigate rural unusual radioactive islands