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Suprahyoid Muscles

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lawoheso's version from 2018-02-10 19:50

Digastric

Question Answer
originanterior belly-inner surface of anterior mandible, posterior belly-mastoid notch
insertionintermediate tendon to body and greater horn of hyoid bone
actiondepress mandible, elevates hyoid
innervationanterior belly- V3 mandibular nerve, posterior belly- VII facial nerve
memorize

Mylohyoid

Question Answer
originmylohyoid line of mandible
insertionmedian raphe and body of hyoid bone
actionelevates hyoid, floor of mouth and tongue during swallowing/speaking
innervationV3 mandibular nerve
memorize

Geniohyoid

Question Answer
origininferior mental spine of mandible, deep to mylohyoid
insertionbody of hyoid bone
actionpulls hyoid bone anteriorly, superiorly, shortens floor of mouth, widens pharynx
innervationventral ramus of C1
memorize

Stylohyoid

Question Answer
originstyloid process of temporal bone
insertionbody of hyoid bone
actionelevates and retracts hyoid bone---elongating mouth
innervationfacial nerve VII
memorize