integumentary system
Medical term for the organ system comprising skin, hair, nails, and associated glands.
外皮系は、皮膚や毛髪、爪などを含む器官系です。
The integumentary system is an organ system that includes the skin, hair, nails, and so on.
Compound of 外皮 (gaihi, 'outer skin, integument') + 系 (kei, 'system'). A modern medical term.