前ぜん頭とう筋きん

noun

frontalis muscle

Anatomical term for the muscle covering the forehead; used in medical and biological contexts.

• 前ぜん頭とう筋きんは額ひたいの表ひょう情じょうを作つくる筋きん肉にくです。

  The frontalis muscle is the muscle that creates expressions on the forehead.