Flashcards in Skull, Face and Neck Deck (45):
Surrounds the brain
suture bewtween occipital and pariatal bones
What is the leading cause of facial injuries?
motor vehicle accidents
Le Fort I involves
Le Fort II involves
nasal/maxillary/ still stable
Le Fort III
across orbital and zygomatic, movable face
layers of scalp
Loose connecti e
where does the nerve and blood supply in scalp lay?
type of CT in scalp
Connects epicranius to occipitalis
What layer seperates easily from 3 previous ones?
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?
Hold bolus of food against cheek and prevents cheeck from falling in
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
Where does the facial nerve emerge from?
What branches are given off by facial nerve?
: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
Is there a C1 dermatome?
What provides sensory to face?
V1, 2, 3 and C2 and C3
Branches of V3
Branches of V2
Branches of V1
palpebral branch of lacrimal
from anterior ethmoid
Where does Trigeminal nerve emerge from?
from brainstem at mid-pons level
Where do the NCB of the trigeminal lay?
Where does the Blood supply for face and scalp come from?
External carotid and Internal carotid artery
What branches of facial blood supply comes from internal carotid
supratrochlear and Supraorbital
What branches of facial blood supply come from external carotid
Superficial temporal and transverse facial
where can you feel the pulse of facial artery?
Anterior to masseter mscl
What veins feed into the retromandibular vein?
Superficial Temporal v + Maxillary v
What drains into external jugular vein?
Posterior branch of retromandibular + auricular vein
What drains into internal jugular vein?
anterior branch of retromandibular + facial vein
Facial vein communicates with what vein?
Superior opthalmic vein
Superior vein drains into ?
lymph nodes located?
deep to SCM
Function of tensor tympani m.
decreases the oscillations and dampens loud noise
What innervates the tensor typmani m.
Function of stapedius muscle
prevents overcontracting of the stapes. Stops really loud noises