Muscles Of Facial Expression Flashcards Preview

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Flashcards in Muscles Of Facial Expression Deck (16):
1

How are wrinkles formed

From at 90* angle to muscle fibres direction

2

What is noticeable about a buccal fat check pad in children and ppl who are malnourished

Children - more prominent and imp as helps prevent cheeks collapse when sucking
Malnourished - wouldn't have it

3

What is the vermillion border

Line around the lips
Transitional zone

4

What are some muscles of facial expression

Frontalis
Orbicularis (oculi) or (oris)
Quadratus superioris
Depressors of the lips
Buccinator
Platysma

5

What is the quadratus superioris

A group of 4 muscles
Zygomaticus major and minor - attach to zygoma
Levator labii superioris - elevate superior lip
Levator labii superioris eleaque Nasi - elevate lip, wing of nose, flare nostrils
Depressor anguli oris - up from mandible to angle of the mouth, depresses angle of mouth

Levator anguli oris - elevate angle of mouth (deeper)
Depressor labii inferiors - depress lower lip
Mentalis - mental region muscle cover over pouted lip

6

What is the area where a lot of muscles of facile expression converge

Modiolus
Fibrous tissue ball

7

What is the Buccinator

Big muscle of the cheek gets pierced by parotid gland at approx upper 2nd molar

8

What is the pterygomandibular raphe

Attachment point of Buccinator a thickened fascia

9

Describe the orbicularis oculi

Divide into 2
Orbital outside external part
Palpebral inside internal eyelid
Whole muscle helps eye close

10

What sit he epicranial aponeurosis

Flattened tendon
Extends form frontal pis and joins to occipitalis
Move in tandem with eachother

11

What are the 5 layers of the scalp

Skin
Connective tissue highly vascularised
Aponeurosis
Loose connective tissue a lot of movement sca move over it
Periosteum very thin layer that is tightly attached to the bone

12

What innervates the Muscles of facial expression

Cranial nerve 7 facial nerve
Only innervates these muscles
To clinically test ask pt to frown close eye ps smile etc

13

How dos the facial nerve exit the cranial cavity

Between the junction of the pons and medulla
Close proximity to vertebral arteries
Leaves through the internal acoustic meatus
Exit via stylomastoid foramen

14

Where does the facial nerve branch and what are the branches

Branches immediately when it comes out of the stylomastoid foramen to a posterior auricular branch then goes to the parotid gland
Goes between superficial and deep layers and forms a plexus and has 5 terminal branches
Temporal
Zygomatic
Buccal
Mandible
Cervical

15

What is Bell's palsy and how does it occur

When right side of face droops and has loss of movement
Viral infection of the facial nerve
Just has some corticosteroids

16

Where are the muscles of facial expression found

Within the superficial fascia some originating on the bone