Temporal & TMJ

Question 1

What are the components of the parotid gland region? (4)

Answer 1

Parotid Gland
Facial nerve ( 6 branches)
External carotid artery
Retromandibular vein

Question 2

Components of the temporal fossa

Answer 2

Temporal fat pad
Temporal fascia
Temporalis muscle
Middle temporal artery
Superficial temporal artery
Deep temporal arteries

Question 3

RElationship of Parotid to Ear

Answer 3

Just inferior/anterior to external acoustic meatus

Swelling of gland will push ear superolateral (causes Mumps-viral infection)

Question 4

what is the retromandibular vein formed by?

Answer 4

superficial and temporal maxillary vein

Question 5

Where does the two divisions of retromandibular vein drain into?

Answer 5

IJV and EJV

Question 6

The external carotid artery’s relationship with retromandibular vein

Answer 6

it is parallel and deep within it

Question 7

what 2 terminal branches does the external carotid artery split into?

Answer 7

superficial temporal artery and maxillary artery

Question 8

what nerve innervates all mm of facial expression?

Answer 8

facial nerve

Question 9

where does the facial nerve exit the cranium?

Answer 9

stylomastoid foramen

Question 10

what does the facial nerve form within the parotid gland?

Answer 10

parotid plexus

Question 11

what are the 6 branches of the facial nerve?

Answer 11

temporal branches
zygomatic branches
buccal
marginal mandibular branch
cervical branch
posterior auricular nerve

Question 12

what bones does the temporal fossa incorporate?

Answer 12

frontal
parietal
temporal
sphenoid
zygomatic

Question 13

The trigeminal nerve V3 division is called what

Answer 13

mandibular

Question 14

what 2 divisions does V3 have

Answer 14

anterior and posterior

Question 15

What is the function of anterior division

Answer 15

small and mainly motor EXCEPT BUCCAL NERVE (SENSORY)

Question 16

What is the function of the posterior branch of V3

Answer 16

larger, sensory EXCEPT MYLOHYOID NERVE (MOTOR)

Question 17

the auriculotemporal nerve travels with what?

Answer 17

superficial temporal a and v

Question 18

what does the auriculotemporal nerve innervate?

Answer 18

sensory to TMJ and lateral scalp

Question 19

what does the auriculotemporal nerve carry?

Answer 19

p-symp fibers from CN IX into parotid gland

Question 20

what are the components of CN v3?

Answer 20

auriculotemporal nerve
anterior and posterior deep temporal nn.
temporal branches of facial nerve

Question 21

what are the muscles of the infratemporal fossa

Answer 21

temporalis, medial and lateral pterygoids mm

Question 22

what are the a and v of infratemporal fossa?

Answer 22

maxillary and brs

pterygoid plexus of veins

Question 23

what are the nerves of the infratemporal fossa?

Answer 23

mandibular division of CN V
Posterior superior alverolar n (V2)
chorda tympani n branch of CN VII
otic ganglion
lesser petrosal n

Question 24

what is the action of the medial pterygoid muscle?

Answer 24

elevates, protrudes, and rotates mandibule

Question 25

what is the action of the lateral pterygoid muscle?

Answer 25

opens, protudes, and rotates mandible

Question 26

What are the V3 branches?

Answer 26

``` Auriculotemporal masseteric and deep temporal nn medial and lateral pterygoid n buccal n inferior alveolar and lingual n ```

Question 27

what are motor components of V3?

Answer 27

Auriculotemporal masseteric and deep temporal nn medial and lateral pterygoid n

Question 28

what are the sensory components of V3?

Answer 28

buccal n | inferior alveolar and lingual n

Question 29

What are the nerves of mastication?

Answer 29

masseteric n deep temporal n medial and lateral pterygoid n

Question 30

What does the masseteric n supply and run through?

Answer 30

supplies masseter m and goes through mandibular notch

Question 31

what does the deep temporal n supply

Answer 31

temporalis m

Question 32

what does the medal and lateral n supply?

Answer 32

supplies medial and lateral pterygoid muscles

Question 33

what is a special sensory branch of CN VII

Answer 33

chorda tympani n

Question 34

what does chorda tympani n join posteriorly?

Answer 34

lingual n

Question 35

what does the chorda tympani supply?

Answer 35

p-symp innervation to lower 2 salivary glands

Question 36

what does the chorda tympani n carry to the tongue?

Answer 36

taste fibers from anterior 2/3 of tongue

Question 37

what is the TMJ formed by?

Answer 37

portions of temporal bone and mandible

Question 38

what joint is the TMJ

Answer 38

modified hinge type synovial joint

Question 39

what are the 2 actions of TMJ

Answer 39

hinge and gliding actions

Question 40

where is the articular disc between?

Answer 40

temporal bone and mandible

Question 41

what are the 3 specifics of the articular disc

Answer 41

- concavoconvex superior surface - concave inferior surface - increases in thickness toward periphery

Question 42

whats the significance of the concavoconvex superior surface?

Answer 42

fit articular tubercle & mandibular fossa

Question 43

whats the significance of the concave inferior surface

Answer 43

to fit around mandibular condyle

Question 44

What is the significance of the increased thickness toward periphery?

Answer 44

attaches the articular capsule

Question 45

what are the 2 accessory ligaments of TMJ

Answer 45

stylomandibular ligament | sphenomandibular ligament

Question 46

what does the stylomandibular ligament separate?

Answer 46

parotid and submandibular glands

Question 47

what is the sphenomandibular ligament separated by?

Answer 47

capsule by maxillary a and auriculotemporal n

Question 48

what does the facial nerve innervate?

Answer 48

facial expression muscles

Question 49

what are the 3 contents of the temporal fossa

Answer 49

temporal fat pad temporalis m masseter muscle neurovasculature

Question 50

what 3 arteries are in the temporal fossa?

Answer 50

middle temporal artery superficial temporal artery deep temporal arteries

Question 51

what does the buccal nerve supply?

Answer 51

buccal mucosa and skin of cheek

Question 52

what does the inferior alveolar nerve enter?

Answer 52

mandibular foramen

Question 53

what does the lingual nerve innervate?

Answer 53

anterior 2/3 of the tongue