Infratemporal Fossa And Pterygopalantine Fossa

Front 1

the infratemporal fossa lies between what two structures medially and one structure laterally

Back 1

between the pharynx and lateral pterygoid plate medially and the ramus of the mandible laterally

Front 2

the infratemporal fossa is inferior to which bone

Back 2

the temporal bone

Front 3

what are the two important holes in the sphenoid bone

Back 3

the foramen ovale and the foramen spinosum

Front 4

what does the foramen ovale transmit

Back 4

the mandibular portion of the CN V3

Front 5

what does the foramen spinosum transmit

Back 5

the middle meningeal artery

Front 6

what is the anterior border of the infratemporal fossa

Back 6

the posterior surfaceof the maxilla

Front 7

what is the posterior boundary of the infratemporal fossa

Back 7

mandibular fossa (where jawbone attaches), styloid process, carotid sheath

Front 8

the tissue space of the infratemporal fossa continues down into

Back 8

the superior mediastinum

Front 9

the temporalmandibular joint is between

Back 9

the articular tubercle of temporal bone and the head of the mandible

Front 10

the articulating surface of the temporal bone (in TMJ) is the

Back 10

articular tubercle

Front 11

what covers the articulating surfaces of the TMJ

Back 11

avascular fibers (rather than the usual hyaline cartilage) forming an articular disk!

Front 12

what type of joint is the TMJ

Back 12

synovial

Front 13

what is the articulation point of TMJ specifically called

Back 13

the mandibular fossa

Front 14

the upper part of the TMJ allows the mandible to

Back 14

slide anteriory

Front 15

the lower part of the TMJ allows

Back 15

the mandible to rotate

Front 16

three ligaments of TM joint

Back 16

1. temporomandibular ligament

2. sphenomandibular ligament

3. sylomandibular ligament

Front 17

temporomandibular joint: attachments and function

Back 17

-attached to posterior mandible and posterior border of zygomatic arch.

-restricts movement of head of mandible forward and backwards.

Front 18

when is the temporomandibular ligament lax? tight?

Back 18

lax when in middle (rest) position; tight when jaw is pushed back or protruded forwards.

Front 19

inferiorly, the temporomandibular ligament is adjacent to which joint

Back 19

hinge joint

Front 20

superiorly, the temporormandibular ligament is adjacent to which joint

Back 20

gliding joint

Front 21

what is the only ligament attached to the TMJ joint capsule

Back 21

the temporomandibular ligament

Front 22

stylomandibular joint: attachments and functoin

Back 22

-styloid process to angle of mandible

-keeps mandible from protruding forward

Front 23

sphenomandibular ligament attachment points

Back 23

spine of sphenoid to the lingula of the mandible

Front 24

function of sphenomandibular ligaments

Back 24

maintains ocnstant distance between the spine of the sphenoid and the lingula of the mandible so that top and bottom teeth do not touch at rest

Front 25

the spine of the sphenoid is right next to

Back 25

the foramen spinosum

Front 26

the lingula of the mandible is right next to

Back 26

the mandibular foramen

Front 27

what portion of the TM joint is used for small movements

Back 27

the hinge joint

Front 28

what portion of the TMjoint is used for larger motions

Back 28

both gliding and hinging (to avoid closing the oropharynx)

Front 29

in larger openings, the axis of rotation of the mandible is around the

Back 29

lingula

Front 30

when the mouth is wide open, the head of the mandible is next to the

Back 30

articular tubercle (the head has moved forward)

Front 31

when the mouth is closed the head of the mandible is towards the __ of the mandibular fossa

Back 31

back (posterior)

Front 32

if you move the head of the mandible further forward than the __ you will dislocate the jaw

Back 32

mandibular fossa

Front 33

what causes a dislocated jaw to be locked into position

Back 33

the masseter muscle contracts

Front 34

how can you reduce a dislocation

Back 34

push downwards and backwards on the back teeth

Front 35

the muscles of mastication are innervated by

Back 35

the motor root of the mandibular division of the trigeminal nerve (V3)

Front 36

MATT

Back 36

mylohyoid, anterior digastric, tensor tympani (eardrum), tensor veli palatini (soft palate)

Front 37

temporalis m attachment

Back 37

coronoid process on mandible to temporal bone (makes arch)

Front 38

action of temporalis m

Back 38

-closes jaw (anterior fibers)

-moves jaw back (posterior fibers)

Front 39

Masseter m

Back 39

zygomatic arch and angle of the mandible

Front 40

innervation of temporalis m

Back 40

2 branches of V3: anterior and posterior deep temporal nerves

Front 41

where do the anterior and posterior deep temporal nerves run?

Back 41

deep to the temporalis m

Front 42

action of masseter m

Back 42

closes jaw by lifting mandible

Front 43

innervation of masseter m

Back 43

nerve to masseter (from V3)

Front 44

what are the two heads of the lateral pterygoid

Back 44

inferior and superior

Front 45

attachment of the inferior head of the lateral pterygoid muscle

Back 45

lateral side of the lateral pterygoid plate to neck of mandible articular disk

Front 46

attachment of the superior head of the lateral pterygoid muscle

Back 46

sphenoid bone to neck of mandible articular disc

Front 47

both pterygoid msucles attach to the

Back 47

lateral pterygoid plate

Front 48

action of the lateral pterygoid muscle

Back 48

protrudes jaw out; the ONLY muscle of mastication that helps open the mouth

Front 49

medial pterygoid muscle attachments

Back 49

medial side of the lateral pterygoid plate to the medial side of the angle of the mandible

Front 50

action of the medial pterygoid muscle

Back 50

pulls upward and medially (closes), can help pull jaw back

Front 51

which attachment of the medial pterygoid m is medial to the other

Back 51

the attachment to the lateral pterygoid plate is much more medial than the attachment medial to the angle of the mandible

Front 52

contents of the infratemporal fossa

Back 52

1. lateral and medial pterygoid muscles

2. maxillary artery and its branches

3. V3 and its branches

4. pterygoid venous plexus

Front 53

behind the neck of the mandible the external carotid artery divides into

Back 53

the superficial temporal artery and the maxillary artery

Front 54

in order to enter the infratemporal fossa, the maxillary artery passes between the

Back 54

neck of the mandible and the spehnomandibular ligament

Front 55

the divisions of the maxillary artery are based upon passage along

Back 55

the lateral pterygoid muscle

Front 56

the branches off of the first and third portions of the maxillary artery go

Back 56

through foraminae

Front 57

the branches off the middle portion of the maxillary artery go

Back 57

to supply the muscles of mastication

Front 58

two major branches from the 1st portion of maxillary a

Back 58

medial meningeal artery (upward through foramen spinosum) and inferior alveolar artery (down through mandibular foramen)

Front 59

medial meningeal artery is from which portion of maxillary artery

Back 59

first

Front 60

inferior alveolar artery is from which portion of the maxillary artery

Back 60

first

Front 61

the last branch of the inferior alveolar artery is the

Back 61

mental artery -- out through mental foramen

Front 62

the muscles of mastication each have one artery except

Back 62

temporalis, which has two (anterior and posterior temporal arteries)

Front 63

arteries off middle portion of maxillary artery

Back 63

temoral aa(2), medial pterygoid a, lateral pterygoid a, masseter a, buccal a

Front 64

what supplies the cheek with blood

Back 64

the buccal artery

Front 65

the pterygomaxillary fissure is between

Back 65

the pterygoid plates and the maxilla

Front 66

what does the pterygomaxillary fissure lead to

Back 66

the pterygopalatine fossa

Front 67

two branches of the maxillary artery that leave the pterygopalatine fossa are the

Back 67

posterior superior alveolar artery and the infraorbital artery

Front 68

Sensory input to the face is from the

Back 68

trigeminal nerve

Front 69

the mandibular portion of the trigeminal nerve enters the infratemporal fossa via the

Back 69

foramen ovale

Front 70

main trunk of V3 gives off

Back 70

meningeal branch and the nerve to the medial pterygoid muscle

Front 71

meningeal branch returns to cranial cavity via

Back 71

foramen spinosum

Front 72

anterior division of V3 gives

Back 72

-2 deep tempral nerves

-lateral pterygoid nerve

-messeter nerve

-buccal nerve

Front 73

masseter nerve goes through the

Back 73

mandibular notch

Front 74

meningeal n is what kind

Back 74

sensory

Front 75

buccal n is what kind

Back 75

sensory

Front 76

posterior division of V3

Back 76

auriculotemporal, inferior alveolar, lingual

Front 77

auriculotemporal provides sensory to

Back 77

the ear and temporal region

Front 78

what does the auriculotemporal n carry

Back 78

postganglionic parasympathetic fibers that run from the otic ganglion to the parotid gland controlling secretions from that gland

Front 79

the inferior alveolar branch (n) ends distally as

Back 79

the mental nerve (supplying sensory to chin)

Front 80

inferior alveolar nerve supplies

Back 80

sensory to mandible and lower teeth; also gives motor branches to mylohyoid and anterior belly of digastric

Front 81

lingual nerve supplies sensory to

Back 81

anterior 2/3 of tongue

Front 82

lingual nerve joins ___ in the infratemporal fossa

Back 82

chorda tympani

Front 83

chorda tympani carries

Back 83

taste information from anterior 2/3 of tongue; also preganglionic parasympathetic fibers that supply the submandibular ganglion which controls secretions from the submandibular and sublingual glands

Front 84

chorda tympani runs across the

Back 84

ear drum

Front 85

the pterygoid venous plexus lies deep to the

Back 85

lateral pterygoid plexus

Front 86

pterygoid venous plexus receives drainage from the

Back 86

deep fascial veins (also connected to caverous sinus)

Front 87

the pterygoid venous plexus drains to the

Back 87

maxillary vein and retromandibulra vein

Front 88

the maxillary vein and retromandibular veins drain to the

Back 88

internal and external jugular veins

Front 89

the pterygopalatine fossa is located between

Back 89

the pterygoid plates and the vertical plates of the palatine bone

Front 90

maxillary artery enters the pterygopalatine fossa via the

Back 90

pterygoidmaxillary fissure (then divides into multiple arteries)

Front 91

all of the nerves within the pterygopalatine fossa are from the

Back 91

V2 (maxillary division of the trigeminal nerve)

Front 92

parasympathetic postganglionic fibers from WHICH ganglion can be found with the nerves in the pterygopalatine fossa

Back 92

pterygopalatine ganglion (they control secretion)

Front 93

V2 enters the pterygopalatine fossa via the

Back 93

foramen rotundum

Front 94

preganglionic parasympathetic fibers enter the pterygopalatine fossa via the

Back 94

pterygoid canal

Front 95

what travels through the infraorbital fissure

Back 95

the infraorbital nerve

Front 96

what does the infraorbital nerve supply

Back 96

to the orbit, skin below eye, and maxillary sinus

Front 97

which nerve supply the middle and upper teech

Back 97

anterior and middle superior alveolar nerves (from infraorbital nerve)

Front 98

posterior superior alveolar nerve supplies the

Back 98

posterior upper teeth

Front 99

what travels through the greater and lesser palatine canals

Back 99

the greater and lesser palatine nerves and arteries

Front 100

who supplies the hard and soft palates?

Back 100

the greater and lesser palatine nerves and arteries (which exit the pterygopalatine fossa via the greater and lesser palatine canals)

Front 101

what exits the pterygopalatine fossa via the sphenopalatine foramen

Back 101

the nasopalatine nerve and sphenopalatine atery which supply the nasal septum

Front 102

what innervates the nasal septum

Back 102

the nasopalatine nerve

Front 103

what supplies blood to the nasal septum

Back 103

the sphenopalatine artery

Front 104

where does the sphenopalatine artery travel through on its way to the nasal cavity

Back 104

the sphenopalatine foramen

Front 105

where does the nasopalatine nerve travel through on its way to the nasal cavity

Back 105

through the sphenopalatine foramen