OINAS Flashcards
Orbicularis oris Location
Around mouth
Orbicularis oris Action
Compress lips against ant. teeth, close mouth, protrudes lips
Depressor anguli oris Location
Angle of mouth
Depressor anguli oris Action
Depresses angle of mouth
Levator anguli oris Location
Angle of mouth
Levator anguli oris Action
Elevates mouth
Risorius Location
Angle of mouth
Risorius Action
Draws angle of mouth laterally
Zygomatic major Location
angle of mouth
Zygomatic major action
Draws angle of mouth up and back
Depressor labii inferioris Location
lower lip
Depressor labii inferioris action
depresses lower lip
Levator labii superioris location
Alar cartilage and skin of nose; upper lip; nasolabial groove and upper lip
Levator labii superioris action
Elevates upper lips; flares nostrils
Mentalis location
Skin of chin
Mentalis action
Puckers skin of chin; protrudes lower lip
Nasalis location
lateral nasal cartilages; skin of margin of nostrils
Nasalis action
Compresses nostrils; dilates or flares nostrils
Orbicularis oculi- Orbital location
fibers encircle margins of orbit and insert into medial palpebral ligament
Orbicularis oculi- Orbital action
Closes eyes forcefully
Orbicularis oculi- Palpebral location
fibers arch laterally through lids and interdigitate laterally in raphe
Orbicularis oculi- Palpebral action
closes eyes gently
Orbicularis oculi- Lacrimal location
Lacrimal bone behind lacrimal sac
Orbicularis oculi- Lacrimal action
Squeeze lubricating tears against eyeball
Corrugator location
Skin underlying eyebrow
Corrugator action
Vertical wrinkling of bridge of nose
Frontalis location
Skin of forehead
Frontalis action
Pulls scalp up and back
Occipitalis location
Skin of occipital area
Occipitalis action
Pulls scalp backward and forward along w/ occipitalis
Procerus location
Skin of glabella
Procerus action
Traverse wrinkling of bridge of nose
Anterior auricular location
anterior medial aspect of helix of auricle
Anterior auricular action
pulls ear forward
Posterior auricular location
posterior medial aspect of auricle
Posterior auricular action
pulls ear backward
Superior auricular location
superior medial aspect of auricle
Superior auricular action
pulls ear superiorly
Buccinator origin
Pterygomandibular raphe & alveolar process of mandible and maxilla
Buccinator insertion
Upper fibers cross to insert into lower lip; lowers fibers cross to insert into upper lip
Buccinator action
Compresses cheek against molar teeth; sucking and blowing
