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Temporal And Infratemporal Fossae Flashcards

0
Q

Interconnected spaces on the lateral side of head

A

Temp and infra temp fossae

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1
Q

Fossae

A

Groove, depression or trench

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2
Q

Boundaries formed by

A

Bone and soft tissue

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3
Q

What’s invest wren the TF AND ITF

A

Zygomatic arch

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4
Q

Shape of ITF

A

Wedge

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5
Q

IFT deep to what 2 structures

A

Masseter and Ramus of the mandible

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6
Q

Name the other parts of the head whose structures pass through the ITF

A

Cranial cavity
Neck
Pterygopalatine fossa, floor of oral cavity, and orbit, TF, superficial regions of the head

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7
Q

Four muscles of mastication.

A

Masseter
Temporalis
Medial and lateral pterygoid

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8
Q

MOM that is lateral to the ITF

A

Masseter

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9
Q

MOM in the ITF

A

Medial and lateral pterygoid

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10
Q

MOM fills the TF

A

Temporalis

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11
Q

7 bones that contribute to the boundaries of the TF AND ITF

A 
Zygomatic 
Temporal
Sphenoid 
Maxila and mandible 
Frontal and parietal
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12
Q

Which part of the temporal bone forms the bony framework of the TF and ITF

A

Squamous

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13
Q

Which part of the temporal bone forms the posteromefial corner of the roof of the ITF

A

Tympanic part

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14
Q

Which part forms TMJ and articulates with the head of the mandible

A

Tympanic part

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15
Q

2 surface features that mark the lateral surface of the squamous part of the temporal bone on medial wall of the TF

A

Supramastoid crest

And groove for middle temporal artery

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16
Q

Transversely oriented and extends posteriorly from the base of the zygomatic process and marks posteroinferior border of the TF

A

Supramastoid crest

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17
Q

Vertically oriented surface feature

A

Groove for middle temporal artery

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18
Q

Branch of the superficial temporal artery

A

Middle temporal artery

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19
Q

2 features that form the TMJ on te inferior aspect of the root of the zygomatic process

A

Articular tubercle

Mandibular fossa

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20
Q

Posterior to the mandibular fossa

A

External auditory meatus

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21
Q

Flat concave plate of bone that forms part of the external auditory meatus

A

Tympanic part of temporal bone

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22
Q

Between tympanic and squamous part of temporal bone and can be seen if viewed inferiorly

A

Tympanosquamous fissure

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23
Q

Medially a small slip of bone from the petrous part of the temporal bone that insinuates itself into the TS fissure and forms

A

Petrotympanic fissure

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24
What exits the skulls and enters the ITF through the PT fissure
Chorda tympani nerve
25
Parts of shpenoid that form framework of ITF
Lateral plate of the pterygoid process and greater wing
26
What part of spheroid forms the medial wall of TF
Greater wing of sphenoid
27
What parts of the sphenoid forms the roof of the ITF
Inferior and lateral surfaces of the Greater wing
28
Sharply angled boundary between the lateral and inferior surfaces if the greater Wong
Infratemporal crest
29
2 apertures at the base of the greater wing and what passes through them and one foramina
Foramen ovale - mandibular nerve Foramen spinosum- middle meningeal artery Emissary foramina - emissary veins (to pterygoid plexus to cavernous sinus )
30
Irregularly shaped and medial to Foramen spinosum
Spine of sphenoid
31
Attachment site for cranial end of the sphenandibualar ligament
Spine of sphenoid
32
What attaches to the spine of sphenoid
Cranial end of the sphenomandibular ligament
33
Vertically oriented sheet of bone tags projects poster plateau from the pterygoid process and provide POA for the pterygoid muscles
Lateral plate of the pterygoid process
34
POSTERIOR surface of the maxilla contributes to the
Anterior wall of the ITF
35
Anterior wall of ITF is marked by
A Foramen for the posterior alveolar nerve and vessels
36
Quadrangular shaped bone that forms bony prominence of the cheeks
Zygobatic bone
37
3 process that extend from the zygomatic bone
Maxillary process Fontal process Temporal process
38
One or more small foramina on the surface of the plate where it attaches to the frontal process
Zygomaticotemporal foramina
39
Part of mandible that is Quadrangular in shape
Ramus of the mandible
40
Processes at the ROM
Condylar and coronoid
41
Lateral surface of the ROM is POA for
Masseter muscle
42
Posterior and inferior borders of ROM form
Angle of mandible
43
Subeditor border so notched to form
Mandibular notch
44
Anterior border of ROM is sharp and is continuous below
Oblique line
45
Flat triangular process that POA for Temporalis muscle
Coronoid process
46
Pos and sup borders make the
Condylar process
47
Condylar process consists of
Head of mandible | Neck of mandible
48
Shallow depression on the neck of mandible
Pterygood fovea
49
Med surface of the RAM forms which wall of ITF
Lateral
50
Most distinctive feature of the lateral wall of ITF
Mandibular Foramen
51
Superior opening of the mandibular canal and what passes through it ?
Mandibular Foramen and inferior alveolar nerve and vessels
52
Triangular elevation for the atachment of the MANDIBULAR end of the sphenomandibular ligament
Lingula
53
Elongate groove that extends anteoinferiorly from the mandibular Foramen
Mylohyoid groove with nerve to Mylohyoid
54
Roughened surface of ROM for attachment of
Medial pterygoid muscle
55
Movements that are made possible by the TMJ
Side to side movement Complex chewing Opening and closing of the mouth
56
TMJ formed between what 3 structures
Articular fossa Head of mandible Articulate tubercle of T bone
57
How does the TMJ differ from other synovial joints
Fibrocartilage
58
What divides the TMJ it into 2 parts
Lower part - elavatopn and depression | Upper part - protrusion or retraction
59
Opening of the mouth involves
Protrusion and depression
60
What lines the articular surfaces of the joint capsule
Synovial membrane
61
What encloses the TMJ OF the joint capsule
Fibrous membrane
62
3 extra capsular ligaments associated to the TMJ
Lateral Sphenomandibular Stylomandibular
63
Ligament that is closest to the joint
Lateral ligament
64
Medial to the TMJ, runs from spine of sphenoid
SPmn log
65
Passes from the styloid process
Stylomandibular
66
Movements of the mandible
Depression elevation protrusion retraction
67
Muscles that protrude the mandible
Lateral pterygoid | Medial pterygoid
68
Retraction
Temporalis Masseter Geniohyoid Digastric
69
Elevation
Temporalis Masseter Medial pterygoid
70
Depression
Gravity Digastric Geniohyoid Mylohyoid muscles
71
Powerful movement if the mandie
Elevation
72
All muscles that move TMJ are Innervation by and EXCEPT
Mandibular nerve | Except the Geniohyoid - c1 spinal nerve
73
Powerful muscle of mastication
Masseter
74
Shape of Masseter
Quadrangular
75
Innervation of Masseter
Masseteric nerve from mandibular nerve
76
Supply for the Masseter muscle
Masseteric artery from maxillary artery
77
Narrow fan shaped space covers lateral surface of the skull
Temporal fossa
78
Upper margin of the temporal fossa is defined by
2 superior and inferior temporal lines
79
Temporal fossa is Limited laterally by
Temporal fascia
80
Fan shaped app neurosis that overlies the Temporalis muscle
Temporal fascia
81
Major structure is the TF
Temporalis
82
Other structures that pass through TF
Zygotemp nerves
83
Large fan shaped muscle
Temporalis
84
Powerful elevator of the mandible
Temporalis
85
Function of Temporalis
Elavation Retraction Side to side movement
86
Innervation of Temporalis
Deep tenporal nerves
87
Supply to Temporalis
Middle temporal artery and deep temporal arteries
88
Nerves usually 2 in number originate form the anterior trunk of the mandibular nerve
Deep temporal nerves
89
Supply the skin of the TEMPLE and passes through the TF
Zygatomaticotemporal nerves branch of zygomatic nerve from maxillary nerve
90
Usually 2 in number and originate from the maxillary artery
Deep temporal arteries
91
Originates from superficial temporal artery just superior to the Zygomatic arch
Middle temporal artery
92
Nerves and vessels of the TF
2 deep temporal nerves from mandibular nerve Zygomaticotemporal nerves from zygomatic nerve from maxillary nerve 2 deep temporal arteries from maxillary artery Middle temporal artery from superficial temporal artery
93
Wedge shapes space inferior to TF
ITF
94
Roof of ITF has
Foramen spinosum and ovale and Petrotympanic fissure
95
Lateral wall of the ITF
Mandibular Foramen
96
Medial wall of ITF
Pterygomaxillary fissure
97
Muscles in the medial wall of the ITF Which are the 2 muscles of the soft palate
Tensor veli palatini | Levator veli palatini
98
Anterior wall of ITF
Alveolar Foramen and infra orbital fissure of the orbit
99
7 Major contents of the ITF
Sphenomandibular ligament, med and lat pterygoid , Max artery Mandibular nerve , glossopharyngeal nerve and pterygoid plexus of veins
100
Quadrangular muscle with deep and superficial heads
Medial pterygoid
101
Quadrangular muscle with deep and superficial parts
Masseter
102
Innervation of med pterygoid
Nerve to medial pterygoid from mandibular nerve
103
Thick triangular muscle with upper and lower head
Lat pterygoid
104
Major protruder of the Lowe jaw
Lat pterygoid
105
Innervation if lat pterygoid
Nerve to lateral pterygoid from mandibular nerve
106
When both lat and med P contract on one side
Chin moves to the oppsiye side
107
Largest of 3 div of trigeminal nerve
Mandibular
108
Ophthalmic and maxillary are
Sensory
109
Mandibular nerve function
Both motor and sensory
110
V3 carries sensory Innervation from
The gingivae of mandible Anterior 23rds of tongue Lower lip Skin over temple and lower face and part of cranial dura mater
111
v3 motor Innervation to
Most of the muscles that move mandible and tensor veli palatini and tensor tympani
112
Branches of the mandibular nerve
1 )Small meningeal branch 2) anterior trunk: 4branches : buccal (s), nerve to lat pterygoid (m), deep temporal n, masseteric nerve 3) posterior trunk: (3s) inferior alveolar( to nerve to Mylohyoid) , Auriculotemporal, lingual
113
Major sensory branch if the posterior trunk of the v3
Lingual nerve
114
Function of lingual nerve
General sensation of ant 23rds of tongue , oral mucosa, lingual gingivae
115
What makes the lingual nerve in danger during procedures
LN enters Oral Cavity between POSATCH of Mylohyoid ms to the Mylohyoid line & the ATCH of sup constrictor of the pharynx to the pterygomandibular raphe. As it enters the floor of the ORCAV, it is in a shallow Groove on medsurfofMAND immediately inferior to the last molar tooth,and is palpable through the oral mucosa and in danger when operating the MOLAr teth and gingivae
116
Lingual nerve passes into tongue on hypoglossus muscle and attaches to
Submandibular ganglion
117
Anotherajor sensory branch of the posterior trunk of v33
Inferior alveolar nerve
118
Function of inf alveolar n
Innervates all lower teeth and associated gingivae, skin of Lower lip and chin. Motor - Mylohyoid muscle and ant belly of Digastric muscle
119
Extraction of molar teeth can be difficult because
The mandibular canal contains the inf alv nerve and is inf to the roots of the molars which curve around he canal
120
Branches of the inf alveolar nerve and what they innervate
1) inferior alveolar nerve - 3 molars and 2nd PM 2) incisive nerve - 1st PM, incisor, canine and related gingivae 3) mental nerve - lower lip and chin
121
Which nerve is palpable through oral mucosa adjacent to the roots of pm teeth
Mental nerve
122
Branches of 2 cranial nerves that join the mandibular nerve in the ITF
Chorda tympani from facial nerve and lesser petrosal nerve (from tympanic plexus - glossopharyngeal nerve )
123
What two nerves Casey taste from the ant 23rds of tongue
Lingual nerve from v3 and chorda tympani from facial
124
Nerve that mainly carries parasympathetic fibers to parotid gland
Lesser petrosal nerve
125
anesthesia widely practiced by dentist
Inf alv nerve
126
Other nerves that can be used to anesthetize
Infra orbital Mental Buccal
127
Largest branch of the external carotid artery in the neck and supples NASAL CAV ORAL CAV teeth dura mater of cranial cavity and ITF PPF
Maxillary artery
128
Max artery goes through the
Pterygomaxillary fissure
129
Branches of the max artery
1st part (between neck of man and spheman lig)--/ middle meningeal Inferior alveolar arteries Small- deep auricular, anterior tympanic, accessory meningeal branches 2nd part (lat pterygoid) --/ deep temporal, masseteric, buccal, pterygoid branches
130
Largest artery of the meningeal vessels and supplies dura mater
Middle meningeal artery
131
If mma is injured it results in a
Extradural hematoma
132
Supplies all lower teeth and gingivae and chin and lower lip
Inferior alveolar artery
133
What connects the pterygoid plexus to the cavernous sinus
Emissary veins
134
Route by which infections can spread to cranial cavity through teeth
Emissary veins
135
Because of no valves in the veins of the head and neck, a esthetics can back flow into the
Tissues and cranial cavity
136
Pterygoid plexus connects
Posteriorly small maxillary vein with retromandibular vein Anteriorly , deep facial Vein with facial vein
137
Four Quadrangular structures in TF and ITF
Masseter Medial pterygoid Ramus of mandible Zygomatic bone
138
3 fan shaped structures
Temporalis Temporal fascia Temporal fossa

General Anatomy (2 decks)

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