human body
「人体」 has another reading with different meanings.
personal appearance; looks
人体の構造について詳しく説明された。
The structure of the human body was explained in detail.
この薬は人体に悪影響を与えない。
This medicine does not adversely affect the human body.
人体模型を使って授業が行われた。
The class was conducted using a human body model.