Hyoglossus - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The hyoglossus is an extrinsic muscle of the tongue. It is located in the floor of the oral cavity, immediately lateral to the geniohyoid muscle. Attachments: Arises from the hyoid bone and inserts onto the lateral aspect of the tongue. Function: Depression and retraction of the tongue. Innervation: Hypoglossal nerve. Blood supply: Lingual artery with contributions from the tonsillar artery. By TeachMeSeries Ltd (2026) Fig 1The extrinsic muscles of the tongue. Note the palatoglossus muscle is not included in this illustration. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the hyoglossus muscle? The hyoglossus muscle is an extrinsic muscle of the tongue that plays a crucial role in its movement. It is situated in the floor of the oral cavity, adjacent to the geniohyoid muscle. What are the attachments of the hyoglossus? The hyoglossus muscle originates from the hyoid bone and inserts onto the lateral side of the tongue. This positioning allows it to effectively influence tongue movement. What is the primary function of the hyoglossus? The primary function of the hyoglossus muscle is to depress and retract the tongue. This action is essential for various oral functions, including speech and swallowing. Which nerve innervates the hyoglossus muscle? The hyoglossus muscle is innervated by the hypoglossal nerve. This nerve is crucial for controlling tongue movements. What is the blood supply to the hyoglossus? The blood supply to the hyoglossus muscle comes primarily from the lingual artery, with additional contributions from the tonsillar artery. This vascular supply is important for the muscle's function and health. Rate This Article