Face and Scalp Flashcards
scalp layers:
skin, CT, aponeurotic layer, loose CT, pericranium
frontal belly of occipitofrontalis attaches to the:
epicranial aponeurosis, skin, and subcutaneous tissue of forehead and eyebrows
frontal belly of occipitofrontalis acts to:
elevate eyebrows and wrinkle skin on forehead by protracting scalp
occipital belly of occipitofrontalis attaches to:
epicranial aponeurosis and lateral 2/3 of superior nuchal line
occipital belly of occipitofrontalis acts to:
retract scalp
actions of the auricular muscles
anterior auricular draws ear upward and forward, superior auricular elevates ear, and posterior auricular draws ear upward and backward
corrugator supercilii functions to:
draws eyebrow medially and inferiorly (concern or worry)
the palpebral part of the orbicularis oculi functions to:
gently close eyelids
the orbital part of the orbicularis oculi functions to:
tightly close eyelids
the procerus functions to:
produce transverse wrinkles over bridge of nose
the depressor septi nasi functions to:
pull nose inferiorly
the nasalis functions to:
compress nasal aperture and flare nostrils
the levator labii superioris alaeque nasi functions to:
raise upper lip and open nostril
zygomaticus major functions to:
draw corner of mouth upward and laterally (smile)
zygomaticus minor functions to:
draw upper lip upward
zygomaticus major position compared to minor?
inferior
risorius functions to:
retract corner of mouth (grin)
levator labii superioris functions to:
raise upper lip
depressor labii inferioris functions to:
draw lower lip down
mentalis functions to:
raise and protrude lower lip
orbicularis oris functions to:
close and protrude lips
buccinator functions to:
compress cheek
what are the 5 terminal branches of the facial nerve?
temporal, zygomatic, buccal, marginal mandibular, cervical
Bell’s palsy
paralysis of some or all facial muscles on affected side; eyelids will evert disrupting the spread of lacrimal fluid over the cornea preventing adequate lubrication