An Inferior View of the Hyoglossus Muscle of a Male

Description

Arising from the body and greater horn (cornu majus) of the hyoid bone, the hyoglossus appears as a thin, quadrilateral sheet ascending superiorly into the lateral aspect of the tongue. From an inferior perspective, its fibers course vertically and slightly posteriorly, positioned lateral to the genioglossus and medial to the mylohyoid and submandibular region. The posterior margin aligns near the interval where the lingual artery passes deep to the muscle, while the hypoglossal nerve (CN XII) typically runs superficial to it along the inferior surface of the tongue. A clean landmark. Orientation of the hyoglossus matters because it defines a practical dissection plane between floor-of-mouth musculature and the neurovascular bundle of the tongue, a relationship that becomes concrete when controlling hemorrhage from the lingual artery or tracing CN XII in neck surgery. In transoral and transcervical approaches to the tongue base, the muscle’s lateral position helps you anticipate where the lingual nerve and submandibular duct swing anteriorly while the artery stays deeper. Edema, penetrating trauma, or tumor spread along the tongue base also makes these layers feel less forgiving. Use this inferior hyoglossus view for head and neck anatomy teaching in dental, speech-language pathology, and otolaryngology curricula where students must map glossal muscles to the hyoid and to the lingual neurovascular anatomy. It also fits operative atlases and procedural guides covering submandibular gland excision, floor-of-mouth dissection, and arterial control in tongue lacerations. Anatomical accuracy verified by SciePro's Medical Advisory Board.