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Extrinsic Tongue Muscles
Origins, insertions, and action of muscles of the extrinsic tongue
12
Anatomy
Graduate
10/30/2011
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Term
Genioglossus: origin
 Definition
sup mental tubercle of mandible
Term
Genioglossus: insertion
 Definition
body of hyoid,
radiates throughout tongue post to ant
Term
Genioglossus: action
 Definition
protrudes,
retracts,
depresses tongue
Term
Hyoglossus: origin
 Definition
body and greater horn of hyoid
Term
Hyoglossus: insertion
 Definition
lateral aspect of tongue
Term
Hyoglossus: action
 Definition
depresses,
retracts tongue
Term
Styloglossus: origin
 Definition
ant aspect of styloid process
Term
Styloglossus: insertion
 Definition
sides of tongue,
mingles c hyoglossus
Term
Styloglossus: action
 Definition
retracts,
elevates tongue
Term
Palatoglossus: origin
 Definition
inf aspect of palatine aponeurosis
Term
Palatoglossus: insertion
 Definition
lat aspect of the tongue
Term
Palatoglossus: action
 Definition
narrows oropharyngeal isthmus,
elevates pharynx
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