屈くっ筋きん

noun

flexor muscle; flexor

Anatomical term for a muscle that bends a joint; contrasted with 伸筋 (extensor).

See also: 伸筋

• 肘ひじを曲まげるときは、上じょう腕わん二に頭とう筋きんなどの屈くっ筋きんが働はたらく。

  When bending the elbow, flexor muscles such as the biceps brachii work.