Extrinsic muscles of the tongue. Left side. (Styloglossus visible at center top.)
Coronal section of tongue, showing intrinsic muscles. (Styloglossus labeled at center left.)
|Origin||Styloid process of temporal bone|
|Insertion||tip and sides of tongue|
|Artery||sublingual branch of the lingual artery.|
|Nerve||Hypoglossal nerve (CN XII)|
|Actions||retraction and elevation of tongue|
|Anatomical terms of muscle|
The Styloglossus, the shortest and smallest of the three styloid muscles, arises from the anterior and lateral surfaces of the styloid process near its apex, and from the stylomandibular ligament.
Passing downward and forward between the internal and external carotid arteries, it divides upon the side of the tongue near its dorsal surface, blending with the fibers of the Longitudinalis inferior in front of the Hyoglossus; the other, oblique, overlaps the Hyoglossus and decussates with its fibers.
The styloglossus draws up the sides of the tongue to create a trough for swallowing. As a pair they also aid in retracting the tongue.