Muscles of Deglutition

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Author:
rustemk
ID:
31514
Filename:
Muscles of Deglutition
Updated:
2010-08-27 18:07:44
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Origin Insertion Action Innervation Muscles Deglutition
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Description:
Origin, Insertion, Action and Innervation of the Muscles of Deglutition
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  1. Superior Longitudinal (Tongue)
    • Origin: Intrinsic
    • Insertion: Intrinsic
    • Action: Shortens tongue, raises sides and tip of tongue
    • Innervation: Hypoglossal, CN VII
  2. Transverse (Tongue)
    • Origin: Intrinsic
    • Insertion: Intrinsic
    • Action: Lengthens and narrows tongue
    • Innervation: Hypoglossal, CN XII
  3. Vertical (Tongue)
    • Origin: Intrinsic
    • Insertion: Intrinsic
    • Action: Flattens and broadens tongue
    • Innervation: Hypoglossal, CN VII
  4. Inferior Longitudinal (Tongue)
    • Origin: Intrinsic
    • Insertion: Intrinsic
    • Action: Shortens tongue, turns tip of tongue downward
    • Innervation: Hypoglossal, CN XII
  5. Genioglossus
    • Origin: Mental spine
    • Insertion: Tongue and body of hyoid
    • Action: Depresses tongue, protrudes and retracts tongue, elevates hyoid
    • Innervation: Hypoglossal, CN XII
  6. Hyoglossus
    • Origin: Greater horn of hyoid
    • Insertion: Tongue
    • Action: Depresses and pulls tongue posteriorly
    • Innervation: Hypoglossal, CN XII
  7. Styloglossus
    • Origin: Styloid Process
    • Insertion: Tongue
    • Action: Elevates and pulls tongue posteriorly
    • Innervation: Hypoglossal, CN XII
  8. Palatoglossus
    • Origin: Aponeurosis of soft palate
    • Insertion: Tongue
    • Action: Elevates and pulls tongue posteriorly, narrows fauces
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  9. Tensor Veli Palatini
    • Origin: Scaphoid fossa, spine of sphenoid, lateral auditory tube
    • Insertion: Aponeurosis of soft palate
    • Action: Tenses soft palate
    • Innervation: Trigeminal, CN V
  10. Levator Veli Palatini
    • Origin: Petrous portion, temporal bone: medial auditory tube
    • Insertion: Soft palate
    • Action: Elevates soft palate
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  11. Uvulae
    • Origin: Posterior nasal spine, aponeurosis of palate
    • Insertion: Uvula
    • Action: Shortens soft palate
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  12. Palatopharyngeus
    • Origin: Aponeurosis of soft palate
    • Insertion: Posterior thyroid cartilage, posterolateral pharynx
    • Action: Narrows fauces, elevates larynx and pharynx
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  13. Digastric, Anterior belly
    • Origin: Inferior border of mandible near symphysis
    • Insertion: Intermediate tendon to body and cornu of hyoid
    • Action: Elevates and pulls hyoid anteriorly, assists in depressing the mandible
    • Innervation: Trigeminal, CN V
  14. Digastric, Posterior belly
    • Origin: Mylohyoid line of mandible
    • Insertion: Body of hyoid and median raphe
    • Action: Elevates and pulls hyoid posteriorly
    • Innervation: Facial, VII
  15. Mylohyoid
    • Origin: Mylohyoid line of mandible
    • Insertion: Body of hyoid and median raphe
    • Action: Elevates hyoid and tongue, depresses mandible
    • Innervation: Trigeminal, CN V
  16. Geniohyoid
    • Origin: Median ridge of mandible
    • Insertion: Body of hyoid
    • Action: Elevates hyoid and tongue; depresses mandible
    • Innervation: Ansa Cervicalis: C1, C2
  17. Stylohyoid
    • Origin: Styloid process of temporal bone
    • Insertion: Body of hyoid
    • Action: Elevates and pulls hyoid posteriorly
    • Innervation: Facial, CN VII
  18. Thyrohyoid
    • Origin: Oblique line of thyroid cartilage
    • Insertion: Greater horn of hyoid
    • Action: Elevates thyroid cartilage, depresses hyoid
    • Innervation: Ansa Cervicalis: C1, 2
  19. Sternohyoid
    • Origin: Manubrium sterni, medial end of clavicle
    • Insertion: Body of hyoid, inferior border
    • Action: Depresses hyoid
    • Innervation: Ansa Cervicalis: C1, 2, 3
  20. Omohyoid, Superior belly
    • Origin: Superior border of scapula near scapular notch
    • Insertion: Intermediate tendon by fascia to clavicle
    • Action: Depresses hyoid
    • Innervation: Ansa Cervicalis: C1, 2, 3
  21. Omohyoid, Inferior belly
    • Origin: Intermediate tendon by fascia to clavicle
    • Insertion: Body of hyoid, inferior border
    • Action: Depresses hyoid
    • Innervation: Ansa Cervicalis: C1, 2, 3
  22. Aryepiglottic
    • Origin: Apex of arytenoid cartilage
    • Insertion: Lateral margin of epiglottis
    • Action: Assists in closing inlet of larynx
    • Innervation: Vagux, CN X; Mainly Accessory, CN XI, Cranial root
  23. Thyroepiglottic
    • Origin: Medial surface of thyroid cartilage
    • Insertion: Lateral margin of epiglottis
    • Action: Assists in closing inlet of larynx
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  24. Thyroaretynoid
    • Origin: Medial surface of thyroid cartilage
    • Insertion: Muscular process of aretynoid cartilage
    • Action: Assists in closing glottis, shortens vocal folds
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  25. Aretynoid-Oblique
    • Origin: Base of one aretynoid cartilage
    • Insertion: Apex of opposite arytenoid cartilage
    • Action: Asists in closing glottis by adducting arytenoid cartilages
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  26. Transverse (Larynx)
    • Origin: Posterior surface and lateral border of one arytenoid cartilage
    • Insertion: Posterior surface and lateral border of opposite arytenoid cartilage
    • Action: Assists in closing glottis by adducting arytenoid cartilages
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  27. Lateral Cricoarytenoid
    • Origin: Upper border of arch of cricoid cartilage
    • Insertion: Muscular process of arytenoid cartilage
    • Action: Adducts and medially rotates arytenoid cartilage, assisting in closing glottis
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  28. Vocalis
    • Origin: Medial surface of thyroid cartilage
    • Insertion: Vocal process of arytenoid cartilage
    • Action: Regulates tension of vocal folds
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  29. Posterior Cricoarytenoid
    • Origin: Posterior surface of lamina of cricoid cartilage
    • Insertion: Muscular process of arytenoid cartilage
    • Action: Abducts arytenoid acrtilage, widening glottis
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  30. Cricothyroid
    • Origin: Anterior and lateral part of arch of cricoid cartilage
    • Insertion:
    • Straight - anterior border, inferior horn of thyroid cartilage
    • Oblique - lower border of lamina of thyroid cartilage
    • Action: elevates cricoid arch and elongates vocal folds
    • Innervation: Vagus, CN X; Mainly Accessory, CN XI, Cranial root
  31. Salpinopharyngeus
    • Origin: Auditory tube
    • Insertion: Pharyngeal wall
    • Action: Elevates pharynx
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  32. Stylopharyngeus
    • Origin: Styloid process
    • Insertion: Posterior border of thyroid cartilage, posterolateral wall of pharynx
    • Action: Elevates pharynx and larynx
    • Innervation: Glossopharyngeal, CN IX
  33. Superior Constrictor
    • Origin: Medial pterygoid plate, pterygomandibular raphe, mandible
    • Insertion: Pharyngeal tubercle, pharyngeal raphe
    • Action: Constrict, sequentially, nasopharynx, oropharynx, and laryngopharynx
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  34. Middle constrictor
    • Origin: Horns of hyoid
    • Insertion: Pharyngeal raphe
    • Action: Acts as sphincter to prevent air entering esophagus; relaxes during swallowing
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  35. Inferior Constrictor
    • Origin: Thyroid and cricoid cartilages
    • Insertion: Pharyngeal raphe
    • Action: Acts as sphincter to prevent air entering esophagus; relaxes during swallowing
    • Innervation: Pharyngeal Plexus: CN IX, X, XI
  36. Cricopharyngeus
    • Origin: Arch of cricoid cartilage
    • Insertion: Arch of cricoid cartilage
    • Action: Acts as sphincter to prevent air entering esophagus; relaxes during swallowing
    • Innervation: Pharyngeal Plexus: CN IX, X, XI

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