The suprahyoid muscle is a group of muscles located above the hyoid bone in the neck. There are several synonyms for this muscle group such as digastric muscle, genioglossus muscle, mylohyoid muscle, geniohyoid muscle, and hyoglossus muscle. The digastric muscle is composed of two bellies, anterior and posterior, and it raises the hyoid bone during swallowing. The genioglossus muscle is the main muscle responsible for moving the tongue and hyoid bone, while the mylohyoid muscle forms the floor of the mouth and elevates the hyoid bone. The geniohyoid muscle works in conjunction with the digastric muscle to elevate the hyoid bone, while the hyoglossus muscle attaches the hyoid bone to the tongue.