noun
biceps femoris muscle
Anatomical term for the large muscle on the back of the thigh; part of the hamstrings.
大腿二頭筋は太ももの裏側にある大きな筋肉です。
The biceps femoris is a large muscle on the back of the thigh.
ランニング後に大腿二頭
My biceps femoris feels tight after running.