The levator veli palatini is the primary elevator of the soft palate, contracting to close the nasopharynx during swallowing and phonation to prevent nasal regurgitation and nasal air escape during speech. The two levator muscles form a sling beneath the soft palate that lifts it against the posterior pharyngeal wall. Velopharyngeal insufficiency from levator palati dysfunction produces hypernasal speech and nasal regurgitation of liquids.
| Origin | Petrous part of the temporal bone and inferior cartilaginous Eustachian tube |
|---|---|
| Insertion | Palatine aponeurosis, interdigitating with the opposite muscle in a sling arrangement |
| Nerve Supply | Pharyngeal plexus via the vagus nerve (CN X) |
| Blood Supply | Ascending palatine artery |
| Actions | Elevates the soft palate during swallowing to close the nasopharynx; Assists in Eustachian tube opening |
|---|
During speech the levator veli palatini elevates the soft palate against the posterior pharyngeal wall for all oral consonants and vowels, sealing the nasopharynx. For nasal consonants (M, N, NG) it relaxes to allow air through the nose.
Velopharyngeal insufficiency (VPI) from cleft palate, adenoidectomy in a submucous cleft, or neurological palsy produces hypernasality and nasal air emission during speech. Speech therapy and surgical management (pharyngeal flap, sphincter pharyngoplasty, levator muscle reconstruction during primary palate repair) aim to restore velopharyngeal closure.
Not externally palpable. Assessed by nasopharyngoscopy showing soft palate elevation during phonation.
Levator palati failure to close the nasopharynx producing hypernasal speech and nasal liquid regurgitation, managed with pharyngoplasty or palatoplasty to restore velopharyngeal competence.
