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geniohyoid muscle
Origin: mental spine of mandible
Insertion: body of hyoid bone
Action:
1) draws hyoid forward
2) depresses jaw when hyoid is fixed
Innervation: fibers from ventral rami of C1 & C2
General
skeletal muscle (voluntary muscle)
References
Stedman's Medical Dictionary 26th ed, Williams &
Wilkins, Baltimore, 1995
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