Source:http://linkedlifedata.com/resource/umls/id/C0224440
NCI: A group of four powerful muscles in the front of the thigh. Their actions involve the extension of the knee joint. (NCI),NCI: A group of four powerful muscles in the front of the thigh. Their actions involve the extension of the knee joint.,MSH: The quadriceps femoris. A collective name of the four-headed skeletal muscle of the thigh, comprised of the rectus femoris, vastus intermedius, vastus lateralis, and vastus medialis.