Head: Muscles of Mastication and Infra-temporal fossa

Question 1

What is the lateral pterygoid plate an extension of

Answer 1

the sphenoid bone

Question 2

What are the boundaries of the infratemporal fossa

Answer 2

anterior: posterior maxilla

Posterior: styloid process

Medial: lateral pterygoid plane, tensor veli palatini, levaotr veli palatini, pharynx

Roof: base of skull (sphenoid bone and temporal bone

Lateral: Ramus of mandible

Question 3

What nerve will travel through the foramen ovale

Answer 3

Mandibular nerve V3

Question 4

Where are the foramen ovale and spinosum found

Answer 4

roof of infratemporal crest

Question 5

What are the muscles of mastication within the head

Answer 5

Temporalis
Masseter
Lateral Pterygoid
Medial Pterygoid

Question 6

What joint will the muscles of mastication act on

Answer 6

temporalmandibular joint

Question 7

where does the lateral pterygoid muscle insert

Answer 7

TMJ

Question 8

What things will cause depression of the mandible

Answer 8

gravity
mylohyoid
anterior digastric
medial pterygoid

Question 9

What is the action of the temporalis muscle

Answer 9

elevate mandible

retracts mandible

Question 10

What is the action of the masseter muscle

Answer 10

elevates mandible

little protraction

Question 11

What are the attachments of the temporalis muscle

Answer 11

temporal fossa

coronoid process of mandible

Question 12

What are the attachments of the masseter muscle

Answer 12

zygomatic arch to inferior angle of mandible

Question 13

What are the attachments of the lateral pterygoid muscle

Answer 13

Proximal: greater wing of sphenoid and lateral aspect of lateral pterygoid plate

Distal: neck of mandible and capsule of TMJ

Question 14

What are the attachments of the medial pterygoid muscle

Answer 14

Proximal: maxillary tuberosity; medial aspect of lateral pterygoid plate

Distal: ramus of mandible

Question 15

What are the two places in which a “medial pterygoid sandwhich will be seen”

Answer 15

inferior angle of the mandible

lateral pterygoid plate

Question 16

What are the bilateral and unilateral actions of lateral pterygoid

Answer 16

Bilateral: protrude mandible, depress mandible

Unilateral: grinding

Question 17

What are the bilateral and unilateral actions of the medial pterygoid muscle

Answer 17

Bilateral: elevate and help protrude mandible

Unilateral: grinding

Question 18

What are the muscles of mastication innervated by

Answer 18

V3

Question 19

What type of joint is the temporomandibular joint

Answer 19

synovial modified hinge

Question 20

What are the articular surfaces of TMJ covered with

Answer 20

fibrocartilage

Question 21

What are the three articular surfaces of the temporomandibular joint

Answer 21

Condyle of mandible
mandibular fossa of temporal bone
articular tubercle of temporal bone

Question 22

What is the function of the capsule of the TMJ

Answer 22

attaches neck of mandible to margins of mandibular fossa

Question 23

What is the function of the lateral temporomandibular ligament

Answer 23

thickening of the capsule; prevents posterior dislocation

Question 24

What does the articular disc divide the TMJ into

Answer 24

upper joint and lower joint cavities

Question 25

What is the articular disc of the TMJ made of

Answer 25

fibrocartilage

Question 26

What type of motion does the lower joint cavity of the TMJ allow for

Answer 26

rotation (hinge movement) during mandible depression

Question 27

What type of motion does the upper joint cavity of the TMJ allow

Answer 27

translation (protraction and retraction; articular disc slides anteriorly over articular tubercle for greater ROM

Question 28

What is the middle meningeal nerve a branch of and where is it seen

Answer 28

branch of V3 | enters foramen spinosum

Question 29

What does the middle meningeal nerve innervate

Answer 29

Dura

Question 30

How will cranial nerve V3 exit the skull

Answer 30

foramen ovale

Question 31

What are the origins of the 2 buccal nerves

Answer 31

buccal nerve from facial | buccal nerve from V3

Question 32

What type of information is carried by buccal nerve from facial

Answer 32

GSA; sensory to the cheek

Question 33

What type of information is carried by buccal nerve from V3

Answer 33

GSE; motor

Question 34

Where will GSAs from auriculotemporal nerve supply sensation to

Answer 34

TMJ Ear Parotid region Temple

Question 35

What does the inferior alveolar nerve innervate

Answer 35

Teeth Bottom gums Sensation to chin and lower lip (via mental n)

Question 36

What are the two types of information carried by chorda tympani

Answer 36

GVE: parasympathetic, GVAs follow SVA

Question 37

What does the GVE from chorda tympani allow for

Answer 37

innervation of salivary glands in and around the oral cavity

Question 38

What does SVA of chorda tympani allow for

Answer 38

taste from anterior 2/3 of tongue

Question 39

What is the maxillary artery a branch of

Answer 39

external carotid

Question 40

Where does the maxillary artery originate within

Answer 40

parotid gland

Question 41

The maxillary artery passes through the infratemporal foss to enter what

Answer 41

pterygopalatine fossa

Question 42

How does the maxillary artery enter the pterygopalatine fossa

Answer 42

pterygomaxillary fissure

Question 43

What muscle will branches of the maxillary artery emerge through

Answer 43

lateral pterygoid muscle

Question 44

What are the 3 parts of the maxillary

Answer 44

retromandibular pterygoid pterygopalatine

Question 45

What is the only branch of the maxillary artery that will not travel with accompanying nerve

Answer 45

lingual artery

Question 46

What are the branches off the 1st part of the maxillary artery

Answer 46

``` Deep auricular Accessory meningeal Middle meningeal Inferior alveolar artery Anterior tympanic ```

Question 47

What nerve will loop around the middle meningeal artery

Answer 47

auriculotemporal nerve

Question 48

What does the middle meningeal artery supply

Answer 48

dura mater

Question 49

What branches will come off the 2nd part of the maxillary artery

Answer 49

masseteric pterygoid deep temporal buccal

Question 50

What are the branches of the 3rd part of the maxillary artery

Answer 50

sphenopalatine descending palatine infraorbital posterior alveolar

Question 51

What structures have communication with the pterygoid venous plexus

Answer 51

``` cranial cavity+ brain orbit oral cavity+ teeth face+ paranasal sinuses Nasal cavities+nasopharynx ```

Question 52

Where is the pterygoid venous plexus found

Answer 52

ITF

Question 53

Where does the pterygoid venous plexus drain

Answer 53

retromandibular vein