Muscles of tongue

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Summary of the muscles of the tongue

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Muscles of tongue

  1. 1. Each half of the tongue contains two types ofmuscles i.e. four intrinsic and four extrinsicmuslces.Extrinsic muscles:Genioglossus M.Styloglossus M.Palatoglossus M.Hyoglossus M.Intrinsic muscles:Superior longitudinal M.Inferior longitudinal M.Transverse M.Vertical M.
  2. 2. Superior part of mental spine of mandible (symphysis menti)Origin Dorsum of tongue and bodyInsertion of hyoidArtery Lingual arteryNerve Hypoglossal nerve (CN XII) Complex - Inferior fibers protrude the tongue, middle fibers depress the tongue, andActions its superior fibers draw the tip back and down
  3. 3. Styloid process of temporal boneOrigin tip and sides of tongueInsertion lingual arteryArtery Hypoglossal nerve (CNNerve XII) retraction and elevation of tongueActions
  4. 4. palatine aponeurosisOrigin tongueInsertion lingual arteryArtery Vagus nerve (via pharyngeal branch toNerve pharyngeal plexus) raising the back part of the tongueActions
  5. 5. HyoidOrigin side of the tongueInsertion lingual arteryArtery Hypoglossal (CN XII)Nerve depresses and retracts the tongueActions
  6. 6. close to the epiglottis,Origin from the median fibrous septumInsertion edges of the tongueArtery lingual arteryNerve hypoglossal nerve retracts the tongue with the inferior longitudinal muscle, making theActions tongue short and thick
  7. 7. root of the tongueOrigin apex of the tongueInsertion lingual arteryArtery Hypoglossal nerveNerve Shortens the tongue and turns the apex under.Actions
  8. 8. median fibrous septumOrigin sides of the tongueInsertion lingual arteryArtery hypoglossal nerveNerve makes the tongue narrow and elongatedActions
  9. 9. Submucosal fibrous layer of dorsum of tongueOrigin Inferior surface borders of tongueInsertion lingual arteryArtery Hypoglossal nerveNerve Flattens and broadens the tongueActions

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