The omega sign is the occurrence of a fold (like the Greek letter omega, Ω ) in the forehead above the root of the nose produced by the excessive action of the corrugator muscle.
Muscle Shoals, Alabama | Muscle Shoals | Muscle & Fitness | muscle | Muscle contraction | Muscle Shoals Sound Studio | Serratus anterior muscle | Muscle tone | Guided Muscle | Vascular smooth muscle | Ultimate Muscle | Sternocleidomastoid muscle | Skeletal striated muscle | Semispinalis muscle | Pyramidalis muscle | Pelvic floor muscle disorder | Muscle of Love | Muscle Museum EP | Muscle bike | Muscle atrophy | Muscle | Memory Muscle | latissimus dorsi muscle | Jacobson's Progressive Muscle Relaxation | Gluteus maximus muscle | External sphincter muscle of male urethra | External sphincter muscle of female urethra | Corrugator supercilii muscle | Brachialis muscle |