9. The Face Flashcards
What are the various layers of the scalp?
S-C-A-L-P
Skin
Connective tissue
Apeunorosis
Loose aerolar tissue
Periosteum
In which layer of the scalp do the facial expression muscles sit?
in the apeunorosis
Identify the muscle in blue and its action.
OCCIPITOFRONTALIS M
- from the occipital belly to the frontal belly
- action: pulls up forehead => forehead wrinkler
identify the muscle in green and orange and its action.
ORBICULARIS OCULI M
orange: palpebral portion: used for when we sleep involuntary close eye
green=orbital portion
both are used for squeezing eyes shut
Identify the muscle in blue and its action
CORRUGATOR SUPERCILII M
-pulls eyebrow torwards middle
Identify the muscle in green and its action
PROCERUS M
-bring eyebrow together and downward
identify the muscle in orange and its action
NASALIS M
-scrunches nose up
identify the muscle in purple and its action
LEVATOR LABII SUPERIORIS ALAEQUE NASI M
-levates lip and brings nose to top lip
Which muscles are responsible for nose flaring?
nasalis m and levator labii superioris alaeque nasi m
identify the muscle in blue and its action.
ORBICULARIS ORIS M
duck face muscle
identify the muscle in green and its action
LEVATOR LABII SUPERIORIS
(from under eye tp upper lip)
elevates ur lips and dilates mouth
works with levator anguli oris
works witn inferior depressor labii inferioris to elevate lip bc bring down bottom lip
identify the muscle in orange and its action
LEVATOR ANGULI ORIS M
- pulls at the corner of the mouth => SMILEEE
works with the levator labii superioris
identify the muscle in red and purple
purple: zygomaticus major
red: zygomaticus minor
- one side snarl : pulls on side of upper lip up
Which muscles opposit the orbicularis oris muscle?
orbicularis oris muscle is responsible for the duck face
=> muscles that dilate mouth oppose the orbicularis oris: levator labii superioris, levator anguilis oris and the zygomaticus muscles
identify the muscle in blue and its action
RISORIUS M
horizontal muscle that attaches at the edge of the lips and pulls lips horizontally => fake smile (kinda part of platysma m)
identify the muscle in green and its action
DEPRESSOR LABII INFERIORIS
(deep to depressor anguili oris)
- pulls bottom lip down
(works with the levator labii superioris as when you jut you bottom lip down your upper lip goes up)
identify the muscle in orange and its action
DEPRESSOR ANGULI ORIS M
pulls corner of lips down :( sad face
identify the muscle in purple and its function
MENTALIS M
elevate chin and protudes bottom lip=pout
works with depressor anguli oris muscle and depressor labii inferioris
identify this muscle and its action
PLATYSMA M
-covers all of neck-> flex neck and you cant flex your next without opening your mouth
identify the muscle in blue and its action
BUCCINATOR M
muscle of mastication that pushes food back into oral cavity and restricts outward air
identify the structure in orange and green and what the arrow points at
- orange = parotid gland
- green : parotid duct (produces saliva in mouth) travels around the masseter muscle what the arrow points at
What are dimples?
indent from the parotid duct
why is it hard to isolate facial expression muscles?
all facial expression muscles are innervated by the facial n and its various branches that anastomose and overlap
Explain the blood supply of the face.
Where can you measure your pulse on your face?
- pulse at external acoustic meatus by measuring the superficial temporal a
- or the frontal branch of the superficial temporal a
- or external carotid a
- facial a
Explain the veinous drainage of the face.
What is the danger triangle?
if you pop a pimple in this triangle the bacteria can be pushed into the cavernous plexus veins and infect n
A 16 year old patient of yours is complaining about headaches and pain in front of her right ear. You notice that she is also demonstrating some difficulty closing her eye on that side. You are able to find a superficial temporal pulse, but it is weal. After ordering imaging, you notice a small tumor in her parotid gland. Based in her symptoms, which of the following structure has likely been affected by the tumor?
a) ophthalmic n
b) maxillary n
c) oculomotor n
d) facial n - temporal branch
e) facial n - buccal branch
temporal branch of facial n because in front of ear, parotid gland tumor and temporal region associated with eye
