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The styloglossus muscle is a bilaterally paired muscle of the tongue. It originates at the styloid process of the temporal bone. It inserts onto the side of the tongue.
The styloglossus arises from the styloid process of the temporal bone and draws the sides of the tongue up to create a trough for swallowing. The palatoglossus arises from the palatine aponeurosis , and depresses the soft palate , moves the palatoglossal fold towards the midline, and elevates the back of the tongue during swallowing.
The hypoglossal nerve provides motor control of the extrinsic muscles of the tongue: genioglossus, hyoglossus, styloglossus, and the intrinsic muscles of the tongue. [2] These represent all muscles of the tongue except the palatoglossus muscle , which is innervated by the vagus nerve . [ 2 ]
Structures that are medial/deep to the hyoglossus are the glossopharyngeal nerve (CN IX), the stylohyoid ligament and the lingual artery and lingual vein.. The lingual vein passes medial to the hyoglossus.
The oropharynx is kept closed by palatoglossus (pharyngeal plexus—IX, X), the intrinsic muscles of tongue (XII) and styloglossus (XII). 9) Laryngeal closure. The primary laryngopharyngeal protective mechanism to prevent aspiration during swallowing is via the closure of the true vocal folds.
The stylopharyngeus is a long, slender, [1] [2] tapered pharyngeal muscle. [2] It is cylindrical superiorly, and flattened inferiorly. [1]It passes inferior-ward along the side of the pharynx [1] between the superior pharyngeal constrictor (situated deep to the stylopharyngeus) and the middle pharyngeal constrictor (situated superficial to the stylopharyngeus), [2] before spreads out beneath ...
The artery passes superior-ward between the medial pterygoid muscle and styloglossus muscle. Upon reaching the superior border of the styloglossus muscle, the tonsillar artery penetrates the superior pharyngeal constrictor muscle to enter the pharynx and reach the palatine tonsil. The artery then ramifies within the substance of the tonsil and ...
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