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genioglossus
The genioglossus is a muscle of the human body which runs from the chin to the tongue. The genioglossus is the major muscle responsible for protruding (or sticking out) the tongue.
==Structure==
Genioglossus is the fan-shaped extrinsic tongue muscle that forms the majority of the body of the tongue. Its arises from the mental spine of the mandible and its insertions are the hyoid bone and the bottom of the tongue.
Innervated by the hypoglossal nerve, the genioglossus depresses and protrudes the tongue.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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