2/2 AOIs Flashcards
digastric action
opens mouth, depresses mandible, elevates hyoid bone, and steady it during swallowing and speech
digastric origin
lower margin of mandible and mastoid process of of temporal bone
digastric insertion
hyoid bone
stylohyoid action
elevates and retracts hyoid during swallowing
stylohyoid origin
styloid process of temporal bone
stylohyoid insertion
hyoid bone
mylohyoid action
elevates hyoid bone and floor of mouth
mylohyoid origin
medial surface of mandible
mylohyoid insertion
hyoid bone and median raphe
geniohyoid action
pulls hyoid bone superiorly and anteriorly
geniohyoid origin
inner surface of mandibular symphysis
geniohyoid insertion
hyoid bone
sternohyoid action
depresses larynx and hyoid bone if mandible is fixed
sternohyoid origin
manubrium and medial end of clavicle
sternohyoid insertion
lower margin of hyoid bone
sternothyroid action
pulls larynx and hyoid bone inferiorly
sternothyroid origin
posterior surface of manubrium of sternum
sternothyroid insertion
thyroid cartilage
thyrohyoid action
depresses hyoid bone and elevates larynx if hyoid is fixed
thyrohyoid origin
thyroid cartilage
thyrohyoid insertion
hyoid bone
pharyngeal constrictor muscles action
constricts pharynx during swallowing