Bones of the lower extremities

Femur Patella Tibia Fibula Tarsals Metatarsals Phalanges

Famous plaid trees flatten tiny mean parsnips
Furry putrid tonsils filter toxic mad potatoes

Functions of skin

Or, more generally, the Integumentary system:

Regulate temperature
Store blood
Protect deeper tissues
Detect sensation
Excrete substances
Synthesize vitamin D

Red soft pandas defend extreme sweatshirts
Radioactive secretaries pluck ecstatic sunflowers

Bones of the wrist

Trapezium Trapezoid Capitate Hamate Scaphoid Lunate Triquetral Pisiform

Tall thin colored hangars stretch limp tiny papayas
Tiny transparent colored hammers scoot lazy temporary pianos

Human organ systems

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