Palatopharyngeus muscle
Updates to Article Attributes
The palatopharyngeus is a muscle of the head and neck, and one of the inner longitudinal muscles of the pharynx.
Summary
- origin: palatine aponeurosis, hard palate
- insertion: thyroid cartilage
- innervation: accessory nerve (CN XI)
- action: elevates the larynx and pharynx; swallowing
Gross anatomy
Origin
The palatopharyngeus is made up of two fasciculi attached to the superior surface of the palatine aponeurosis. The anterior fasciculus has fibres which additionally originate from the posterior border of the hard palate. The posterior fasciculus joins the posterior band of the contralateral palatopharyngeus muscle in the midline.
Insertion
The fasciculi unite at the level of the soft palate. It courses inferolaterally posterior to the tonsil and descends to attach to the posterior border of the thyroid cartilage.
Blood supply
- arterial supply: greater palatine branch of the maxillary artery, ascending palatine branch of the facial artery, pharyngeal branch of the ascending pharyngeal artery
- venous drainage: via similarly named veins
Innervation
The muscle receives motor innervation from the cranial portion of the accessory nerve (CN XI). This occurs via the pharyngeal plexus with branches from the vagus nerve (CN X) and glossopharyngeal nerve (CN IX).
Action
- elevation of the larynx and pharynx
- deglutition
-</ul><h4>Innervation</h4><p>The muscle receives motor innervation from the cranial portion of the accessory nerve (CN XI). This occurs via the <a href="/articles/pharyngeal-plexus">pharyngeal plexus</a> with branches from the <a href="/articles/vagus-nerve">vagus nerve (CN X)</a> and <a href="/articles/glossopharyngeal-nerve">glossopharyngeal nerve (CN IX)</a>.</p><h4>Action</h4><ul>- +</ul><h4>Innervation</h4><p>The muscle receives motor innervation from the cranial portion of the accessory nerve (CN XI). This occurs via the <a href="/articles/pharyngeal-plexus-1">pharyngeal plexus</a> with branches from the <a href="/articles/vagus-nerve">vagus nerve (CN X)</a> and <a href="/articles/glossopharyngeal-nerve">glossopharyngeal nerve (CN IX)</a>.</p><h4>Action</h4><ul>
Unable to process the form. Check for errors and try again.