Anterior Neck Flashcards
thyrohyoid O
oblique line of thyorid cartilage
thyrohyoid I
inferior border of body and greater horn of hyoid
thyrohyoid innervation
C1 via hypoglossal nerve
thyrohyoid action
depresses hyoid and elevates larynx
stylohyoid O
styloid process of temporal bone
stylohyoid I
body of hyoid
stylohyoid innervation
stylohyoid branch of facial nerve CN VII
stylohyoid action
elevates and retracts hyoid, thus elongating floor of mouth
mylohyoid O
mylohyoid line of mandible
mylohyoid I
mylohyoid raphe and body of hyoid
mylohyoid innervation
nerve to mylohyoid
branch of inferior alveolar nerve (from mandibular nerve, CN V3)
mylohyoid action
elevates hyoid
floor of mouth
tongue during swallowing and speaking
digastric O
anterior belly: digastric fossa of mandible
posterior belly: mastoid notch of temporal bone
digastric I
intermediate tendon to body and greater horn of hyoid
digastric innervation
anterior belly: nerve to mylohyoid, a branch of inferior alveolar nerve
posterior belly: digastric branch of facial nerve (CN VII)
digastric action
working with infrahyoid muscles
depresses mandible against resistance
elevates and steadies hyoid during swallowing and speaking
omohyoid O
superior border of scapula near suprascapular notch
omohyoid I
inferior border of hyoid
omohyoid innervation
C1-C3 by a branch of ansa cervicalis
omohyoid action
depresses, retracts, and steadies hyoid
sternohyoid O
manubrium of sternum and medial end of clavicle
sternohyoid I
body of hyoid
sternohyoid innervation
C1-C3 by a branhc of ansa cervicalis
sternohyoid action
depresses hyoid after elevation during swallowing
