Skull, Face and Neck Flashcards
Surrounds the brain
neurocranium
skullcap
calvaria
suture bewtween occipital and pariatal bones
Lambdoid
What is the leading cause of facial injuries?
motor vehicle accidents
Le Fort I involves
maxillary bone
Le Fort II involves
nasal/maxillary/ still stable
Le Fort III
across orbital and zygomatic, movable face
layers of scalp
Skin CT Aponeurosis Loose connecti e Pericranium
where does the nerve and blood supply in scalp lay?
CT layer
type of CT in scalp
dense
Connects epicranius to occipitalis
aponeurosis
What layer seperates easily from 3 previous ones?
Loose CT
Which layer facilitates spread of infection?
loose CT via emnissary veins
How many layers does pericranium have?
2: epicranium and endocranium
If a scalp wound gapes, which layer has it penetrated?
aponeurosis
Hold bolus of food against cheek and prevents cheeck from falling in
Buccinator
Obicularis oculi and obicularis oris are what time of muscle
smooth muscle, sphincter
What are the two parts of the orbiularis oculi?
orbital and palpebral
What 4 muscle make a smile
zygomaticus major and minor
levator labi superious
three superficial layers of facial expression
occipitalis m.
auricular m.
platysma m.
Where does the facial nerve emerge from?
stylomastoid foramen
What branches are given off by facial nerve?
Posterior auricular
:temporal/zygomatic/buccal/marginal mandibular/ cervicle
What nerve innervates platysma?
cervicle branch of CN VII
Damage to muscles of facial expreesion if CN VII is damaged distal to stylomastoid foramen
Bells Palsy