Neuro Clhn Lect #13

Front 1

The infratemporal fossa is located superficial or deep to the ramus of the mandible?

Back 1

deep

Front 2

These three structures lie superficial to the infratemporal fossa?

Back 2

Masseter Muscle, Zygomatic Arch, and Temporalis Muscle

Front 3

Where does the masseter muscle arise from?

Back 3

Anterior 2/3 of the zygomatic arch and infratemporal surface of the maxilla

Front 4

Where does the masseter insert?

Back 4

Ramus of the mandible

Front 5

What lies deep to the masseter muscle?

Back 5

Temporalis muscle and the ramus of the mandible

Front 6

The zygomatic arch is formed by what two bones?

Back 6

temporal (zygomatic process) and zygomatic (temporal process)

Front 7

Where does the temporalis muscle arise from?

Back 7

Temporal fossa and the deep surface of the temporal fascia

Front 8

Where does the temporalis insert?

Back 8

Coronoid process of the mandible and the anterior border of the mandible

Front 9

What is the lateral boundary of the infratemporal fossa?

Back 9

Medial surface of the ramus of the mandible

Front 10

What is the medial boundary of the infratemporal fossa?

Back 10

Lateral pterygoid plate

Front 11

What is the anterior boundary of the infratemporal fossa?

Back 11

posterior aspect of the maxilla

Front 12

What is the posterior boundary of the infratemporal fossa?

Back 12

Tympanic plate and styloid process of the temporal bone

Front 13

The infratemporal surface of the greater wing of the sphenoid and the squamous temporal form the (roof/floor) of the infratemporal fossa?

Back 13

Roof

Front 14

The floor of the infratemporal fossa is formed by what?

Back 14

The attachment of the medial pterygoid muscle to the mandible

Front 15

This feature located in the medial surface of the ramus of the mandible is the opening through which the inferior alveolar nerve passes?

Back 15

Mandibular foramen (into the mandibular canal)

Front 16

This is the triangular piece of bone that overlies the mandibular foramen antero-medially?

Back 16

Lingula

Front 17

What attaches to the lingula?

Back 17

Sphenomandibular ligament

Front 18

The mylohyoid groove transmits this nerve to the floor of the mouth?

Back 18

Mylohyoid nerve (V3)

Front 19

This bony structure is a thin, wing shaped protrusion posterior to the pterygomaxillary fissure?

Back 19

Lateral pterygoid plate

Front 20

What is the hook-like process of the medial pterygoid plate?

Back 20

The hamulus

Front 21

This is the vertical opening formed by the divergence of the maxilla from the lateral pterygoid plate?

Back 21

Pterygomaxillary fissure

Front 22

The pterygomaxillary fissure connects the infratemporal fossa with this fossa?

Back 22

pterygopalatine fossa

Front 23

This is a feature located on the posterior aspect of the maxilla and opens into the floor of the orbit?

Back 23

Inferior orbital fissure

Front 24

This is the concave part of the temporal bone lying anterior to the styloid process and forming the posterior wall of the infratemporal fossa?

Back 24

Tympanic plate

Front 25

This opening is located in the roof of the infratemporal fossa and transmits the mandibular division of the trigeminal and lesser petrosal nerves?

Back 25

Foramen Ovale

Front 26

This is a small opening in the roof of the infratemporal fossa which is posterior to the foramen ovale?

Back 26

Foramen spinosum

Front 27

What does the foramen spinosum transmit?

Back 27

middle meningeal artery and meningeal branch of V3

Front 28

This bony protrusion can be found posterior to the foramen spinosum and in the roof of the infratemporal fossa?

Back 28

Spine of the sphenoid

Front 29

What originates at the spine of the sphenoid?

Back 29

Sphenomandibular ligament

Front 30

This network of veins is located superficial in the infratemporal fossa in close association with the pterygoid muscles?

Back 30

Pterygoid venous plexus

Front 31

What does the pterygoid venous plexus connect?

Back 31

Facial vein with the cavernous sinus

Front 32

The pterygoid venous plexus drains into what vein?

Back 32

Maxillary vein

Front 33

Why is the pterygoid venous plexus clinically relevant?

Back 33

provides conduit for the spread of infection to multiple sites

Front 34

This is the larger terminal branch of the ECA and is found in the infratemporal fossa?

Back 34

Maxillary artery

Front 35

where does the maxillary artery arise?

Back 35

Behind the neck of the mandible

Front 36

How does the maxillary artery enter the infrtemporal fossa?

Back 36

between the neck of the mandible and the sphenomandibular ligament

Front 37

What is the relationship between the maxillary artery and the lateral pterygoid muscle?

Back 37

Usually lateral (superficial) but sometimes deep

Front 38

How does the maxillary artery exit the infratemporal fossa?

Back 38

anteriorly through the pterygomaxillary fissure

Front 39

From posterior to anterior, how can the maxillary artery be divided?

Back 39

Mandibular, pterygoid, and palatine

Front 40

What two branches come off the mandibular part of the maxillary?

Back 40

Middle meningeal and Inferior alveolar artery

Front 41

This artery arises from the medial aspect of the mandibular part of the maxillary artery?

Back 41

Middle meningeal artery

Front 42

This artery arises from the lateral part of the mandibular part of the maxillary artery

Back 42

Inferior alveolar artery

Front 43

This artery passes between the two roots of the auriculotemporal nerve?

Back 43

middle meningeal artery

Front 44

What does the middle meningeal artery supply blood to?

Back 44

Meninges

Front 45

This artery supplies blood to the teeth and gums of the lower jaw and the skin of the chin?

Back 45

Inferior alveolar artery

Front 46

The inferior alveolar artery passes through what foramen and canal, and where does it exit this canal?

Back 46

mandibular foramen and canal, exits at the mental foramen

Front 47

What branches come off the pterygoid part of the maxillary artery?

Back 47

Masseteric, deep temporal, buccal, and pterygoid

Front 48

The masseteric artery courses with the masseteric nerve deep to the tendon of the temporalis and enters the (superficial or deep) surface of the Masseter?

Back 48

Deep

Front 49

These arteries pass between the temporalis muscles and the pericranium?

Back 49

deep temporal arteries

Front 50

This artery runs obliquely forward to the lateral surface of the buccinator?

Back 50

Buccal artery

Front 51

What are the four terminal branches of the maxillary artery?

Back 51

Posterior superior alveolar artery, Infraorbital artery, Sphenopalatine artery, Descending palatine artery

Front 52

This artery supplies blood to the molar and premolar teeth?

Back 52

Posterior Superior Alveolar artery

Front 53

Through what does the infraorbital artery exit the infratemporal fossa?

Back 53

Inferior orbital fissure

Front 54

What does the infraorbital artery supply?

Back 54

upper incisor and canine teeth and mucous membrane of the maxillary sinus; Facial tissue over the maxilla

Front 55

Which artery passes thorugh the pterygopalatine fossa and exits through an opening on its medial wall, the sphenopalatine foramen?

Back 55

Sphenopalatine artery

Front 56

What does the sphenopalatine artery supply?

Back 56

The sinuses of the nasal cavity

Front 57

This canal connects the pterygopalatine fossa to the palate?

Back 57

pterygopalatine canal

Front 58

Within the pterygopalatine canal, what does the descnding palatine artery bifurcate into?

Back 58

Greater and lesser palatine arteries

Front 59

Lesser palatine and greater palatine supply what respectively?

Back 59

Soft palate and hard palate

Front 60

The upper head of the lateral pterygoid muscle arises from what?

Back 60

infratemporal surface of the greater wing of the sphenoid bone

Front 61

The lower head of the lateral pterygoid muscle arises from what?

Back 61

Lateral surface of the lateral pterygoid plate

Front 62

Where do fibers of the lateral pterygoid muscle converge and insert?

Back 62

pterygoid fossa, a depression on the neck of the mandible

Front 63

The deep head of the medial pterygoid muscle arises from the medial surface of this bony feature?

Back 63

Lateral pterygoid plate

Front 64

Where does the smaller superficial head of the medial pterygoid muscle arise from?

Back 64

maxillary tuberosity and pyramidal process of the palatine bone

Front 65

Where does the medial pterygoid muscle insert?

Back 65

medial surface of the angle of the mandible

Front 66

What two muscles acting together form a muscular sling around the angle of the mandible?

Back 66

Medial pterygoid muscle and the masseter

Front 67

This is the only muscle in the infratemporal fossa that is innervated by nerve fibers that arise from the main trunk of V3

Back 67

Medial pterygoid muscle

Front 68

Where does the large sensory trunk and small motor trunk unite to form the main trunk of V3?

Back 68

just after traversing the foramen ovale in the roof of the infratemporal fossa

Front 69

After the main trunk of V3 gives off smaller divisions it branches into two parts; anterior and posterior. Which is Chiefly Sensory?

Back 69

Posterior

Front 70

What are the two branches off the MAIN trunk of V3?

Back 70

Meningeal nerve and Medial pterygoid nerve

Front 71

Meningeal nerve carries what kind of nerve fibers?

Back 71

GSA

Front 72

The medial pterygoid nerve carries nerve fibers of what type?

Back 72

SVE

Front 73

What muscles does the medial pterygoid nerve innervate ?

Back 73

medial pterygoid, tensor veli palatini, and tensor tympani

Front 74

What is the only sensory branch of the anterior division of V3?

Back 74

Buccal Nerve (GSA)

Front 75

The Buccal nerve passes between the heads of which muscle?

Back 75

Lateral pterygoid muscle

Front 76

The Buccal nerve supplies what?

Back 76

Skin and mucosa of the cheek

Front 77

What are the 4 branches off the anterior division of the V3?

Back 77

Buccal nerve, Deep temporal nerves, masseteric nerve, nerve to the lateral pterygoid

Front 78

This nerve ascends vertically to enter the DEEP surface of the temporalis muscle?

Back 78

Deep temporal nerve (SVE)

Front 79

This nerve traverses the mandibular notch and enters the deep surface of the masseter muscle?

Back 79

Masseteric nerve (SVE)

Front 80

Where do all the motor nerves of the anterior division of V3 enter the infratemporal fossa?

Back 80

between the skull and the upper head of the lateral pterygoid muscle

Front 81

What are the three branches of the posterior division of V3?

Back 81

Auriculotemporal (GSA), Lingual (GSA), and Inferior Alveolar Nerve (GSA)

Front 82

This nerve passes between the sphenomandibular ligament and the neck of the mandible?

Back 82

Auriculotemporal nerve

Front 83

The auriculotemporal nerve ascends (posterior/anterior) to the ear along with the superficial temporal artery?

Back 83

Anterior

Front 84

Which nerve has two roots and encircles the middle meningeal artery?

Back 84

Auriculotemporal nerve

Front 85

This nerve conveys sensory information from the auricle, temporal region, temporomandibular joint, and parotid gland?

Back 85

Auriculotemporal nerve

Front 86

This nerve runs medial to the lateral pterygoid muscle on the surface of the tensor veli palatini?

Back 86

Auriculotemporal nerve

Front 87

This nerve enters the infratemporal fossa in between the bottom of the lateral pterygoid and the top of th emedial pterygoid muscle?

Back 87

Lingual nerve; inferior alveolar nerve

Front 88

During its desccent medial to the lateral pterygoid muscle, the lingual is in what relationship to the inferior alveolar nerve?

Back 88

Anterior and medial

Front 89

The lingual is joined by this nerve in the deep part of the infratemporal fossa?

Back 89

Chorda tympani

Front 90

This nerve conveys general sensation from the anterior 2/3 of the tongue?

Back 90

Lingual

Front 91

This nerve supplies sensation to the teeth and gums of the lower jaw while within the mandibular canal.

Back 91

Inferior alveolar nerve

Front 92

The inferior alveolar nerve exits the madibular canal at the mental foramen and becomes this nerve?

Back 92

Mental nerve

Front 93

What does the mental nerve supply sensation to?

Back 93

chin and lower lip

Front 94

The inferior alveolar nerve gives off this branch just before entering the mandibular canal?

Back 94

Nerve to the mylohyoid (SVE)

Front 95

What is the ONLY motor branch of the posterior division of V3?

Back 95

Nerve to the mylohyoid (SVE)

Front 96

This autonomic ganglia lies just below the foramen ovale on the main trunk of V3?

Back 96

Ottic Ganglion

Front 97

What synapse on the otic ganglion?

Back 97

Lesser petrosal (preganglionic GVE of CN9)

Front 98

Postganglionic parasympathetic fibers of the otic ganglion course with this nerve to innervate the parotid gland?

Back 98

Auriculotemporal Nerve of V3

Front 99

What is the function of the ottic ganglion?

Back 99

Parotid gland salivation (secretomotor)

Front 100

This nerve arises from the facial nerve just before it exits the skull through the stylomastoid foramen?

Back 100

Chorda Tympani

Front 101

Where does the chorda tympani nerve exit the skull?

Back 101

petrotympanic fissure

Front 102

Where does the preganglionic parasympathetic fibers of the chorda tympani synapse?

Back 102

Submandibular ganglion

Front 103

What do the postganglionic parasympathetic fibers from the submandibular ganglion innervate?

Back 103

Submandibular and sublingual glands

Front 104

SVA fibers of the chorda tympani, whose peripheral processes end in taste buds, have their cell bodies in what ganglion?

Back 104

Geniculate

Front 105

What is TMJ syndrome caused by?

Back 105

Stress related use of TMJ such as teeth grinding (can cause facial pain)

Front 106

These two structures form the superior surface of the TMJ?

Back 106

Mandibular fossa and articular tubercle

Front 107

This superior surface structure of the TMJ is a concave depression in the squamous portion of the temporal bone?

Back 107

Mandibular fossa

Front 108

This convex structure of the superior surface of the TMJ is located anterior to the mandibular fossa?

Back 108

Articular tubercle

Front 109

This forms the inferior surface of the TMJ?

Back 109

Head of the mandible

Front 110

The articular surfaces of the TMJ are lined with what?

Back 110

Fibrocartilage

Front 111

Loose fibers can be found in the (upper or lower part of the TMJ)?

Back 111

Upper

Front 112

Tight fibers are found in the (upper or lower part of the TMJ)

Back 112

Lower

Front 113

The loose and tight fibers in the TMJ function as what?

Back 113

Limit the forward and backward movement of the articular disc with mandibular movement

Front 114

How many lateral and medial ligaments maintain the head of the mandible in the mandibular fossa?

Back 114

One lateral and 2 medial