abdominal internal oblique muscle
Anatomical term for the internal oblique muscle of the abdomen.
The abdominal internal oblique muscle is one of the abdominal muscles and is involved in twisting the trunk.
外腹斜筋 is the external oblique muscle, located more superficially than 内腹斜筋.
腹直筋 is the rectus abdominis muscle, the central abdominal muscle, while 内腹斜筋 is a lateral muscle.
Compound of 内 (internal) + 腹 (abdomen) + 斜 (oblique) + 筋 (muscle), directly describing the muscle's location and orientation.