<prompt> Mental spines provide attachment toGenioglossusAnterior posterior bellies of digastricMylohyoidSuperior constrictor of pharynx  <response>: Mental spine also known as genial tubercle, is a small bony elevation found on the inner surface of mandible, in the midline.There are 4 mental spines - superior and inferior pair.Superior genial tubercle gives origin to genioglossus muscle of tongue.Inferior genial tubercle gives origin to geniohyoid muscle. 