Temporal & Infratemporal Fossa - Nbde I

Front 1

Contents of temporal fossa? (4)

Back 1

1. Temporalis muscle fascia
2. Auriculotemporal nerve (CN V-3)
3. Superficial temporal artery & vein
4. Deep temporal vessels & nerves

Front 2

Bones of the temporal fossa? (4)

Back 2

1. Temporal
2. Parietal
3. Frontal
4. Sphenoid

Front 3

What attaches to superior temporal line?

Back 3

Temporalis muscle fascia

Front 4

What attaches to inferior temporal line?

Back 4

Temporalis muscle

Front 5

What is located beneath the pterion?

Back 5

Middle meningeal artery

Front 6

Mental foramen is located opposite which tooth?

Back 6

Mandibular 2nd premolars

Front 7

Origin of temporalis muscle?

Back 7

1. Temporal fossa
2. Temporal fascia

Front 8

Insertion of temporalis muscle?

Back 8

1. Coronoid process
2. Anterior surface ramus of mandible

Front 9

Origin of masseter muscle?

Back 9

Inferior surface of zygomatic arch

Front 10

insertion of masseter muscle? (2)

Back 10

1. Coronoid process
2. Lateral surface ramus of mandible

Front 11

Origin of superior head of lateral pterygoid muscle?

Back 11

Infratemporal surface & infratemporal crest of greater wing of sphenoid

Front 12

Origin of inferior head of lateral pterygoid muscle?

Back 12

Lateral aspect of lateral pterygoid plate (sphenoid)

Front 13

Insertion of lateral pterygoid muscle? (3)

Back 13

1. Neck of mandible (pterygoid fovea)
2. Articular disc
3. Capsule of TMJ

Front 14

Origin of deep head of medial pterygoid muscle? (2)

Back 14

1. Medial aspect of lateral pterygoid plate
2. Pyramidal process of palatine bone

Front 15

Origin of superficial head of medial pterygoid muscle?

Back 15

Tuberosity of maxilla

Front 16

Insertion of medial pterygoid muscle?

Back 16

Medial surface of mandible, inferior to mandibular foramen

Front 17

Purpose of oblique line on mandible?

Back 17

Distributes force

Front 18

What goes through mandibular foramen?

Back 18

Inferior alveolar nerves & vessels

Front 19

Which nerve supplies muscles of mastication?

Back 19

V-3

Front 20

What are the 2 important openings in the roof of the infratemporal fossa?

Back 20

1. Foramen ovale
2. Foramen spinosum

Front 21

What goes through foramen spinosum?

Back 21

Middle meningeal artery

Front 22

What goes through foramen ovale? (2)

Back 22

V-3 & lesser petrosal nerve

Front 23

What are the communications between the infratemporal fossa & middle cranial fossa? (2)

Back 23

1. Foramen ovale
2. Foramen spinosum

Front 24

What are the communications between the infratemporal fossa & temporal fossa? (2)

Back 24

1. Zygomatic arch
2. Infratemporal crest

Front 25

What is the commuincation between the infratemporal fossa & orbit?

Back 25

Inferior orbital fissure

Front 26

What is the communication between the infratemporal fossa & pterygopalatine fossa?

Back 26

Pterygomaxillary fissure

Front 27

Contents of infratemporal fossa? (6)

Back 27

1. Muscles of mastication
2. V-3
3. Maxillary artery
4. Pterygoid plexus of veins
5. Otic ganglion & lesser petrosal nerve (IX)
6. Chorda tympani (VII)

Front 28

Mandibular division of V is derived from which branchial arch?

Back 28

1st branchial arch

Front 29

What is unique about mandibular divsion of V (compared to V-1 & V-2)?

Back 29

V-3 = Sensory & motor
V-1 & V-2 = pure sensory

Front 30

Main trunk of mandibular division trigeminal nerve is deep to which muscle?

Back 30

Lateral pterygoid

Front 31

Which branches come off of mand div of trigeminal main trunk? (4)

Back 31

1. Meningeal branch
2. Nerve to medial pterygoid
3. Nerve to tensor tympani
4. Nerve to tensor palatini

Front 32

Main trunk of V3 is composed of what 2 roots?

Back 32

Sensory & motor root

Front 33

Meningeal branch of V3 supplies?

Back 33

Sensory to meninges in middle cranial fossa

Front 34

Nerve to medial pterygoid, tensor tympani & tensor palatini supply?

Back 34

Motor to :
Medial pterygoid, middle ear & soft palate

Front 35

Main trunk of V3 divides into which 2 divisions?

Back 35

1. Anterior
2. Posterior

Front 36

What are the nerves of the anterior division of main trunk of V3? (5)

Back 36

1. Anterior deep temporal
2. Posterior deep temporal
3. Masseteric nere
4. Lateral pterygoid nerve
5. Buccal nerve

Front 37

Anterior division of main trunk of V3 is primarily?

Back 37

Motor

Front 38

Which nerve of anterior divison is sensory?

Back 38

Buccal nerve

Front 39

Buccal nerve supplies sensory to?

Back 39

Overlying skin, mucosa of vestibule & gingiva of mandibular molars

Front 40

Anterior division primarily supplies motor to?

Back 40

Muscles of mastication

Front 41

What are the branches of the posterior division of main trunk of V3?

Back 41

1. Auriculotemporal nerve
2. Inferior alveolar nerve
3. Nerve to mylohyoid
4. Lingual nerve
5. Chorda tympani (facial nerve)

Front 42

Posterior division of main trunk is primarily?

Back 42

Sensory

Front 43

Which nerve of posterior division of main trunk is motor?

Back 43

Nerve to mylohyoid

Front 44

Nerve to mylohyoid supplies which 2 muscles?

Back 44

1. Mylohyoid
2. Anterior belly of digastric

Front 45

Chorda tympani comes off which nerve?

Back 45

Facial (VII)

Front 46

Chorda tympani joins & runs w/ which nerve?

Back 46

Lingual nerve

Front 47

Lingual nerve supplies?

Back 47

Sensory: Pain, temperature & touch to
1. Anterior 2/3 of tongue
2. Lingual mandibular gingiva
3. Mucosa of floor of mouth

Front 48

Chorda tympani 2 functions?

Back 48

1. Taste to anterior 2/3 of tongue
2. Preganglionic parasympathetics

Front 49

What kind of ganglion is submandibular ganglion?

Back 49

Parasympathetic

Front 50

Incisive nerve is a continuation of which nerve?

Back 50

Incisive nerve = continuation of inferior alveolar beyond mental foramen in the mandible

Front 51

When lingual nerve reaches mental foramen it terminates as?

Back 51

Mental nerve

Front 52

2 terminal branches of External carotid artery?

Back 52

1. Superficial temporal
2. Maxillary

Front 53

Maxillary is divided into 3 different portions based on what landmark of the infratemporal fossa?

Back 53

Lateral pterygoid muscle

Front 54

What are the 3 portions of the maxillary artery?

Back 54

1. Mandibular portion
2. Pterygoid portion
3. Pterygopalatine portion

Front 55

Which portions of the maxillary artery run w/ V-3?

Back 55

1. Mandibular portion
2. Pterygoid portion

Front 56

Which portion of maxillary artery runs w/ V-2?

Back 56

Pterygopalatine portion

Front 57

Branches of the mandibular portion of maxillary artery? (5)

Back 57

1. Deep auricular
2. Anterior tympanic
3. Middle meningeal
4. Accessory meningeal
5. Inferior alveolar

Front 58

Most important arteries of mandibular portion of maxillary artery? (2)

Back 58

1. Middle meningeal
2. Inferior alveolar

Front 59

Branches of the pterygoid portion of maxillary artery? (4)

Back 59

1. Buccal artery
2. Anterior & posterior deep temporal
3. Masseteric artery
4. Pterygoid arteries

Front 60

Branches of pterygopalatine portion of maxillary artery? (6)

Back 60

1. Posterior superior alveolar artery
2. Infraorbital artery
3. Descending palatine
4. Sphenopalatine
5. Pharyngeal artery
6. Artery of pterygoid canal

Front 61

Veins in infratemporal fossa correspond to?

Back 61

Branches of maxillary artery:
1. Maxillary vein
2. Opthlamic veins
3. Facial vein
4. Deep facial vein

Front 62

Importance of veins in infratemporal fossa?

Back 62

Drain to pterygoid plexus which goes intracranially --> communications (can compromise structures w/ in cavernous sinus)

Front 63

Chorda tympani carries what type of autonomic fibers?

Back 63

Preganglionic parasympathetics

Front 64

Postganglionic parasympathetics from submandibular ganglion innervate? (2)

Back 64

1. Submandibular gland
2. Sublingual gland

Front 65

The intersection of the temporal, parietal, frontal & sphenoid bone is called?

Back 65

PTERION

Front 66

What makes up the MEDIAL wall of the infratemporal fossa?

Back 66

Medial wall =
-Lateral pterygoid plate
-Spine of sphenoid
-Superior pharyngeal constrictor

Front 67

What makes up the ANTERIOR wall of infratemporal fossa?

Back 67

Anterior wall =
-Post. surface of maxilla

Front 68

What makes up POSTERIOR wall of infratemporal fossa?

Back 68

Posteior wall =
Tympanic plate of temporal bone

Front 69

What makes up the SUPERIOR wall of infratemporal fossa?

Back 69

Superior wall =
Greater wing of sphenoid & infratemporal surface

Front 70

Preganglionic parasympathetics to parotid gland run with which nerve?

Back 70

Lesser petrosal nerve (IX)

Front 71

preganglionic parasympathetics to parotid gland synapse at which ganglion?

Back 71

Otic ganglion

Front 72

Postganglionic parasympathetics to parotid gland run with which nerve?

Back 72

Auriculotemporal nerve (V-3)