The extrinsic tongue muscles differ from the intrinsic tongue muscles in that the outside the tongue. The extrinsic muscles reposition the tongue , the intrinsic muscles alter the shape of tongue for taking and swallowing.
The extrinsic tongue serve to protrude and retract the tongue. These muscles can elevate and depress the base of tongue. The intrinsic muscles are the superior longitudinal lingual muscle , the inferior longitudinal lingual muscle and the vertical lingual muscle. The extrinsic muscles are the genioglossus, the hyoglossus, the staphylococcus and pathologists.
The extrinsic muscles of the tongue are group of 4 muscles of tongue. All muscle of the tongue , intrensic ans extrinsic are innervated by hypoglossal nerve . The one exception is palatoglassus muscles.
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