The human body: the physical structure of a person (bones, muscles, organs, etc.).
解剖学の授業で人体の構造を学んだ。
In anatomy class I learned the structure of the human body.
この化粧品は人体に安全かどうか試験された。
This cosmetic was tested to see whether it is safe for the human body.
血液は人体の重要な働きの一部だ。
Blood is part of the human body's important functions.