L14 - Face Flashcards
(23 cards)
Platysma: O, I, A
O: SubQ of infraclavicular and supraclavicular regions
I: base of mandible, skin of cheek, lower lip, angle of mouth, orbicularis oris
A: depresses mandible; tenses skin of inferior face and neck
Occipitofrontalis: O, I, A
O: anteriorly from epicranial aponeurosis; posteriorly from superior nuchal line
I: epicranial aponeurosis posteriorly and skin and subQ of eyebrows and forehead anteriorly
A: elevates eyebrows, protracts scalp
Orbicularis oculi: O,I,A
O: orbital margin; palpebral ligament; lacrimal bone
I: skin around margin of orbit; tarsal plates
A: closes eyelids
Procerus: O,I,A
O: facial aponeurosis; lateral nasal cartilages
I: skin between eyebrows
A: depresses medial sides of eyebrows and wrinkles skin over dorsum of nose
Nasalis:
O: Frontal processes of maxillae
I: alar cartilage
A: depresses alae laterally and dilates anterior nasal aperture
Orbicularis oris: O, I, A
O: medial maxilla and mandible; deep surface of skin around mouth
I: mucosa of lips
A: closes oral fissure; compresses and protrudes lips
Levator labii superioris:
O: infraorbital margin
I: skin of upper lip
A: part of dilators of mouth
Zygomaticus minor
O: anterior part of zygomatic bone
I: skin of upper lip
A: part of dilators of mouth
Zygomaticus major
O: lateral part of zygomatic bone
I: angle of mouth
A: elevates labial commissures (corner of mouth)
Risorius:
O: parotid fascia and buccal skin
I: angle of mouth
A: depresses labial commissures (corner of mouth)
Depressor anguli Oris
O: anterolateral base of mandible
I: angle of mouth
A: depresses labial commissures
depressor labii inferioris
O: platysma and anterolateral body of mandible
I: skin of lower lip
A: mouth dilator; depresses and evert lower lip
arteries of the face
FACIAL ARTERY
- branch of external carotid artery
- winds around lower border of mandible and becomes superficial
- passes lateral to angle of mouth
what are the branches/
- superior and inferior labial arteries
- lateral nasal artery
- angular artery
another artery of the face
SUPERFICIAL TEMPORAL
- terminal ranch of external carotid artery
- emerges between TMJ and auricle
- enters temporal fossa
- divides into frontal and parietal branches
another artery
TRANSVERSE FACIAL
- arises from superficial temporal artery
- crosses face superficial to masseter muscle
- anastomoses with facial artery
what do the branches of the transverse facial artery supply?
- parotid gland
- masseter muscle
- skin of face
sensory innervation of the face occurs via what nerve?
V; trigeminal nerve
how many branches, what are they?
3;
- opthalamic
- maxillary
- mandibular
what are the other sensory nerves?
- greater occipital
- lesser occipital
- great auricular (cervical plexus)
what is the motor nerve of the face?
cranial nerve 7; facial nerve
what muscles does it suply?
muscles derived from second pharyngeal arch (hyoid arch)
what are the branches?
- temporal
- zygomatic
- buccal
- mandibular
- cervical
