list of external rotators of the human body list of external rotators of the human body external rotation (or extorsion or lateral rotation) is an anatomical term of motion referring to rotation away from the center of the body. the external rotator muscles include: part of a series of lists abouthuman anatomy general features regions variations movements systems structures arteries bones eponymous foramina glands endocrine lymphatic vessels nerves organs systems veins muscles abductors adductors depressors elevators extensors flexors rotators external internal