Head

Question 1

mastication mm formed embryologically, innervation?

Answer 1

1st branchial arch/ madibular division(V3) of the trigeminal n.

Question 2

What doe muscles of facial expression develop from. innervation?

Answer 2

2nd branchial arch/ facial n

Question 3

insertions - anterior, lateral, neck, medial surface of ramus of mandible

Answer 3

temporalis, masseter, lateral pterygoid, medial pterygoid

Question 4

boundaries of temporal fossa

Answer 4

temporal lines
frontal bone
zygomatic bone

Question 5

what is the area of articulation? what artery crosses it

Answer 5

pterion
middle meningeal a
at risk as a result of lateral head injuries

Question 6

contents of temporal fossa

Answer 6

temporalis m

running over the top of m is-superficial temporal artery and auriculotemporal n.

Question 7

Where does the auricolotemporal n (branch of V3) originate and emerge

Answer 7

infratemporal fossa

anterior to auricle and deep to parotid gland

Question 8

Where is infratemporal fossa located

Answer 8

inferior and deep to the dzyomatic arch and posterior to the maxilla

Question 9

borders of the infratemporal fossa

Answer 9

lateral-ramus of mandible
medial - latral pterygoid plate
anterior-infratemporal surface of maxilla
posterior - condylar process of mandible and styloid process of temporal bone
roof- inferior surface of greater wing of sphenoid bone
floor- level where medial pterygoid m attaches to the angle/ramus of mandible

Question 10

What are the foraminae located in the infratemporal fossa? what emerges from them?

Answer 10

f. ovale- mandibular division of trigeminal n

f. spinosum - middle meningeal artery

Question 11

mandibular n branches into what named nn

Answer 11

auriculotemporal
inferior alveolar
lingual
buccal
named muscular branches for each muscle of mastication

Question 12

auriculotemporal n

Answer 12

sensor to around the ear. carries glossopharyngeal fibers to the parotid, production of saliva

Question 13

sensory to the teeth of the mandible and skin overlying the chin and mandible

Answer 13

inferior alveolar n

Question 14

somatosensation to the anterior 2/3 of the tongue

Answer 14

lingual n

Question 15

a branch of the facial n. that joins lingual n to carry taste sensation from the ant 2/3 of the tongue

Answer 15

chorda tympani

Question 16

sensation over the cheek

Answer 16

buccal n

Question 17

what is a terminal branch of the external carotid that is seen in the infratemporal fossa

Answer 17

maxillary a

Question 18

what are the branches of the maxillary a (described with respect to their position to the lateral pterygoid m)

Answer 18

middle meningeal a

inferior alveolar a.

Question 19

Where does the pterygopalatine fossa lie?

Answer 19

between sphenoid bond posteriorly and maxilla anteriorly

Question 20

What foramina does the pterygopalatine fossa contain

Answer 20

f rotundum

inferior orbital fissure

Question 21

What nerves does the pterygopalatine fossa contain

Answer 21

maxillary division of (V2) branches into infraorbital n. carrying sensation from the skin overlying the maxillary and zygomatic regions

Question 22

What vessels does the pterygopalatine fossa containe?

Answer 22

maxillary artery branches

infraorbital a.

Question 23

What kind of joint is the temporomandibular jt

Answer 23

modified synovial hinge jt.

Question 24

What articulates at the tmj

Answer 24

head of condyle of the mandible and the mandibular fossa with the articular tubercle
there is a articular disc within the joint that is fused with the articular capusle

Question 25

what is the strong ligament of the tmj capsule

Answer 25

the articular capsule is thickened laterally as the lateral temporomandibular ligament

Question 26

Which other two ligaments support the connection of the mandible to the base of the skull

Answer 26

stylomandibular | sphenomandibular

Question 27

what movements occur at the tmj

Answer 27

rotation during initial part of jaw opening, the head of the mandible rotates with the articular disc toward the articular tubercle

Question 28

Where do the muscles of facial expression insert

Answer 28

skin or fascia underlying skin

Question 29

innervation of facial expression muscles

Answer 29

facial n CN VII

Question 30

what are the 6 muscles of facial expression

Answer 30

``` platysma orbiuclaris oris buccinator orbicularis oculi nasails muscle frontalis muscle ```

Question 31

innervation of platysma

Answer 31

cervical and mandibular branch of facial n

Question 32

innervation of orbicularis oris

Answer 32

buccal and mandibular branches of facial n

Question 33

innervation of buccinator

Answer 33

buccal branch of facial n

Question 34

innervation of orbicularis oculi

Answer 34

zygomatic and temporal branches of facial n.

Question 35

innervation of nasalis muscle

Answer 35

zygomatic branch of facial n

Question 36

innervation of frontalis m

Answer 36

temporal branch of facial n

Question 37

occipitalis m. innervation

Answer 37

posterior auricular branch of facial n.

Question 38

smile muscle

Answer 38

zygomaticus major

Question 39

sneer muscle

Answer 39

zygomaticus minor, along with the levators

Question 40

kirk douglas muscle (dimple in middle of chin)

Answer 40

mentalis

Question 41

grin muscle

Answer 41

risorius

Question 42

this muscle is necessary for firmness on the lateral side of the oral cavity

Answer 42

buccinator

Question 43

orbicularis oculi parts

Answer 43

orbital part - sphincter palbebral part - eyelid lacrimal part - medial extension of eyelid over lacrimal puncta, necessary for bathing eye with tears.

Question 44

origin on the maxilla and inserts near the alar cartilage of the nose

Answer 44

nasalis muscle

Question 45

two parts of nasalis muscle

Answer 45

compressor and dilator part

Question 46

continuous with the occipitalis m on the posterior part of the skull as occipitofrontalis m.

Answer 46

frontalis m

Question 47

occipitalis and frontalis are connected by the

Answer 47

epicranial aponeurosis

Question 48

sensor component for all sensation over the face, including proprioception of the muscles of facial expression

Answer 48

trigeminal n.

Question 49

3 divisions of trigeminal n.

Answer 49

V1 ophthalmic V2 maxillary V3 mandibular (only division with motor component)

Question 50

what innervates the muscles of mastication

Answer 50

motor component of V3

Question 51

V1 leaves the middle cranial fossa via

Answer 51

the superior orbital fissure

Question 52

V2 leaves the middle cranial fossa via the

Answer 52

foramen rotundum

Question 53

V3 leaves the middle cranial fossa via the

Answer 53

foramen ovale

Question 54

The ______ nerve is sensory only and thus does not innervate the buccinator muscle (a muscle of facial expression and is innervated by the buccal branch of the facial n)

Answer 54

buccal

Question 55

Branches of V1

Answer 55

supraorbital, supratrochlear, infratrochlear, external nasal, lacrimal

Question 56

Branches of V2

Answer 56

infraorbital, zygomaticofacial, zygomaticotemporal, superior alveolar

Question 57

Branches of V3

Answer 57

auriculotemporal, buccal, mental, inferior alveolar, lingual

Question 58

all the muscles of facial expression are innervated by

Answer 58

facial n

Question 59

the facial n. emerges from _______ through the __________ and then branches after they pass through the _________

Answer 59

base of the skull stylomastoid foramen parotid gland

Question 60

Which branch of the facial n branches posteriorly

Answer 60

posterior auricular

Question 61

6 branches of facial n

Answer 61

``` posterior auricular cervical mandibular buccal zygomatic temporal ```

Question 62

arteries of the face are branches off

Answer 62

the external carotid

Question 63

The branches of the external carotid in ascending order

Answer 63

``` superior thyroid - neck ascending pharyngeal - neck lingual facial occipital posterior auricular superficial temporal maxillary -final branch, seen in the infratemporal fossa ```

Question 64

middle meningeal, inferior alveolar and infraorbital are branches off

Answer 64

maxillary artery, which branches off external carotid

Question 65

what vein drains the majority of the face

Answer 65

internal jugular vein

Question 66

which vein drains into both external jugular and facial

Answer 66

retromandibular

Question 67

veins around the nose are continuous with veins in the orbit that drain into

Answer 67

the cranial cavity | this is a source of infections to the meninges and brain

Question 68

where does the parotid gland lie

Answer 68

in the parotid bed wedged between the ear and the posterior edge of the ramus of the mandible

Question 69

where is the parotid duct located

Answer 69

below the zygomatic arch and empties into the oral cavity adjacent to the upper second molar

Question 70

T/F Facial N fibers travel through the body of the gland and innervate it

Answer 70

F. they do travel through it, but it is innervated by the glossopharyngeal n (CN IX) and the carotid plexus

Question 71

what nerve is responsible for autonomic and parasympathetic innervation of the parotid gland

Answer 71

glossopharyngeal n CN IX

Question 72

what is responsible for production of thick saliva (sympathetic activation) of the parotid gland

Answer 72

carotid plexus

Question 73

what carries the glossopharyngeal innervation to the parotid gland

Answer 73

auriculotemporal n. V3

Question 74

TF auriculotemporal n does not carry sensor fibers into the parotid gland

Answer 74

t

Question 75

What are the 4 muscles of mastication

Answer 75

temporalis, masseter, lateral pterygoid, medial pterygoid