Muscle Group - David Geffen School of Medicine at UCLA

Long head - tubercle of the scapula. Short head – coracoid process of the scapula ... Tricep. Outside upper arm. Extends lower arm. Humerus and scapula. Ulna . Gluteus maximus. Large muscle on the buttocks. Extends thigh. Ilium and sacrum. Femur . Semimembranosus. Back of the thigh. Flexes lower leg and extends thigh. Ischium and femur. ................
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