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General Anatomy > Temporal And Infratemporal Fossae > Flashcards

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
Q

What exits the skulls and enters the ITF through the PT fissure

A

Chorda tympani nerve

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25
Q

Parts of shpenoid that form framework of ITF

A

Lateral plate of the pterygoid process and greater wing

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26
Q

What part of spheroid forms the medial wall of TF

A

Greater wing of sphenoid

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27
Q

What parts of the sphenoid forms the roof of the ITF

A

Inferior and lateral surfaces of the Greater wing

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28
Q

Sharply angled boundary between the lateral and inferior surfaces if the greater Wong

A

Infratemporal crest

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29
Q

2 apertures at the base of the greater wing and what passes through them
and one foramina

A

Foramen ovale - mandibular nerve
Foramen spinosum- middle meningeal artery
Emissary foramina - emissary veins (to pterygoid plexus to cavernous sinus )

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30
Q

Irregularly shaped and medial to Foramen spinosum

A

Spine of sphenoid

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31
Q

Attachment site for cranial end of the sphenandibualar ligament

A

Spine of sphenoid

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32
Q

What attaches to the spine of sphenoid

A

Cranial end of the sphenomandibular ligament

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33
Q

Vertically oriented sheet of bone tags projects poster plateau from the pterygoid process and provide POA for the pterygoid muscles

A

Lateral plate of the pterygoid process

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34
Q

POSTERIOR surface of the maxilla contributes to the

A

Anterior wall of the ITF

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35
Q

Anterior wall of ITF is marked by

A

A Foramen for the posterior alveolar nerve and vessels

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36
Q

Quadrangular shaped bone that forms bony prominence of the cheeks

A

Zygobatic bone

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37
Q

3 process that extend from the zygomatic bone

A

Maxillary process
Fontal process
Temporal process

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38
Q

One or more small foramina on the surface of the plate where it attaches to the frontal process

A

Zygomaticotemporal foramina

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39
Q

Part of mandible that is Quadrangular in shape

A

Ramus of the mandible

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40
Q

Processes at the ROM

A

Condylar and coronoid

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41
Q

Lateral surface of the ROM is POA for

A

Masseter muscle

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42
Q

Posterior and inferior borders of ROM form

A

Angle of mandible

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43
Q

Subeditor border so notched to form

A

Mandibular notch

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44
Q

Anterior border of ROM is sharp and is continuous below

A

Oblique line

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45
Q

Flat triangular process that POA for Temporalis muscle

A

Coronoid process

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46
Q

Pos and sup borders make the

A

Condylar process

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47
Q

Condylar process consists of

A

Head of mandible

Neck of mandible

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48
Q

Shallow depression on the neck of mandible

A

Pterygood fovea

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49
Q

Med surface of the RAM forms which wall of ITF

A

Lateral

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50
Q

Most distinctive feature of the lateral wall of ITF

A

Mandibular Foramen

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51
Q

Superior opening of the mandibular canal and what passes through it ?

A

Mandibular Foramen and inferior alveolar nerve and vessels

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52
Q

Triangular elevation for the atachment of the MANDIBULAR end of the sphenomandibular ligament

A

Lingula

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53
Q

Elongate groove that extends anteoinferiorly from the mandibular Foramen

A

Mylohyoid groove with nerve to Mylohyoid

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54
Q

Roughened surface of ROM for attachment of

A

Medial pterygoid muscle

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55
Q

Movements that are made possible by the TMJ

A

Side to side movement
Complex chewing
Opening and closing of the mouth

56
Q

TMJ formed between what 3 structures

A

Articular fossa
Head of mandible
Articulate tubercle of T bone

57
Q

How does the TMJ differ from other synovial joints

A

Fibrocartilage

58
Q

What divides the TMJ it into 2 parts

A

Lower part - elavatopn and depression

Upper part - protrusion or retraction

59
Q

Opening of the mouth involves

A

Protrusion and depression

60
Q

What lines the articular surfaces of the joint capsule

A

Synovial membrane

61
Q

What encloses the TMJ OF the joint capsule

A

Fibrous membrane

62
Q

3 extra capsular ligaments associated to the TMJ

A

Lateral
Sphenomandibular
Stylomandibular

63
Q

Ligament that is closest to the joint

A

Lateral ligament

64
Q

Medial to the TMJ, runs from spine of sphenoid

65
Q

Passes from the styloid process

A

Stylomandibular

66
Q

Movements of the mandible

A

Depression elevation protrusion retraction

67
Q

Muscles that protrude the mandible

A

Lateral pterygoid

Medial pterygoid

68
Q

Retraction

A

Temporalis
Masseter
Geniohyoid
Digastric

69
Q

Elevation

A

Temporalis
Masseter
Medial pterygoid

70
Q

Depression

A

Gravity
Digastric
Geniohyoid
Mylohyoid muscles

71
Q

Powerful movement if the mandie

72
Q

All muscles that move TMJ are Innervation by and EXCEPT

A

Mandibular nerve

Except the Geniohyoid - c1 spinal nerve

73
Q

Powerful muscle of mastication

74
Q

Shape of Masseter

A

Quadrangular

75
Q

Innervation of Masseter

A

Masseteric nerve from mandibular nerve

76
Q

Supply for the Masseter muscle

A

Masseteric artery from maxillary artery

77
Q

Narrow fan shaped space covers lateral surface of the skull

A

Temporal fossa

78
Q

Upper margin of the temporal fossa is defined by

A

2 superior and inferior temporal lines

79
Q

Temporal fossa is Limited laterally by

A

Temporal fascia

80
Q

Fan shaped app neurosis that overlies the Temporalis muscle

A

Temporal fascia

81
Q

Major structure is the TF

A

Temporalis

82
Q

Other structures that pass through TF

A

Zygotemp nerves

83
Q

Large fan shaped muscle

A

Temporalis

84
Q

Powerful elevator of the mandible

A

Temporalis

85
Q

Function of Temporalis

A

Elavation
Retraction
Side to side movement

86
Q

Innervation of Temporalis

A

Deep tenporal nerves

87
Q

Supply to Temporalis

A

Middle temporal artery and deep temporal arteries

88
Q

Nerves usually 2 in number originate form the anterior trunk of the mandibular nerve

A

Deep temporal nerves

89
Q

Supply the skin of the TEMPLE and passes through the TF

A

Zygatomaticotemporal nerves branch of zygomatic nerve from maxillary nerve

90
Q

Usually 2 in number and originate from the maxillary artery

A

Deep temporal arteries

91
Q

Originates from superficial temporal artery just superior to the Zygomatic arch

A

Middle temporal artery

92
Q

Nerves and vessels of the TF

A

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
Q

Wedge shapes space inferior to TF

94
Q

Roof of ITF has

A

Foramen spinosum and ovale and Petrotympanic fissure

95
Q

Lateral wall of the ITF

A

Mandibular Foramen

96
Q

Medial wall of ITF

A

Pterygomaxillary fissure

97
Q

Muscles in the medial wall of the ITF Which are the 2 muscles of the soft palate

A

Tensor veli palatini

Levator veli palatini

98
Q

Anterior wall of ITF

A

Alveolar Foramen and infra orbital fissure of the orbit

99
Q

7 Major contents of the ITF

A

Sphenomandibular ligament, med and lat pterygoid , Max artery
Mandibular nerve , glossopharyngeal nerve and pterygoid plexus of veins

100
Q

Quadrangular muscle with deep and superficial heads

A

Medial pterygoid

101
Q

Quadrangular muscle with deep and superficial parts

102
Q

Innervation of med pterygoid

A

Nerve to medial pterygoid from mandibular nerve

103
Q

Thick triangular muscle with upper and lower head

A

Lat pterygoid

104
Q

Major protruder of the Lowe jaw

A

Lat pterygoid

105
Q

Innervation if lat pterygoid

A

Nerve to lateral pterygoid from mandibular nerve

106
Q

When both lat and med P contract on one side

A

Chin moves to the oppsiye side

107
Q

Largest of 3 div of trigeminal nerve

A

Mandibular

108
Q

Ophthalmic and maxillary are

109
Q

Mandibular nerve function

A

Both motor and sensory

110
Q

V3 carries sensory Innervation from

A

The gingivae of mandible
Anterior 23rds of tongue
Lower lip
Skin over temple and lower face and part of cranial dura mater

111
Q

v3 motor Innervation to

A

Most of the muscles that move mandible and tensor veli palatini and tensor tympani

112
Q

Branches of the mandibular nerve

A

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
Q

Major sensory branch if the posterior trunk of the v3

A

Lingual nerve

114
Q

Function of lingual nerve

A

General sensation of ant 23rds of tongue , oral mucosa, lingual gingivae

115
Q

What makes the lingual nerve in danger during procedures

A

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
Q

Lingual nerve passes into tongue on hypoglossus muscle and attaches to

A

Submandibular ganglion

117
Q

Anotherajor sensory branch of the posterior trunk of v33

A

Inferior alveolar nerve

118
Q

Function of inf alveolar n

A

Innervates all lower teeth and associated gingivae, skin of Lower lip and chin.
Motor - Mylohyoid muscle and ant belly of Digastric muscle

119
Q

Extraction of molar teeth can be difficult because

A

The mandibular canal contains the inf alv nerve and is inf to the roots of the molars which curve around he canal

120
Q

Branches of the inf alveolar nerve and what they innervate

A

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
Q

Which nerve is palpable through oral mucosa adjacent to the roots of pm teeth

A

Mental nerve

122
Q

Branches of 2 cranial nerves that join the mandibular nerve in the ITF

A

Chorda tympani from facial nerve and lesser petrosal nerve (from tympanic plexus - glossopharyngeal nerve )

123
Q

What two nerves Casey taste from the ant 23rds of tongue

A

Lingual nerve from v3 and chorda tympani from facial

124
Q

Nerve that mainly carries parasympathetic fibers to parotid gland

A

Lesser petrosal nerve

125
Q

anesthesia widely practiced by dentist

A

Inf alv nerve

126
Q

Other nerves that can be used to anesthetize

A

Infra orbital
Mental
Buccal

127
Q

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

A

Maxillary artery

128
Q

Max artery goes through the

A

Pterygomaxillary fissure

129
Q

Branches of the max artery

A

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
Q

Largest artery of the meningeal vessels and supplies dura mater

A

Middle meningeal artery

131
Q

If mma is injured it results in a

A

Extradural hematoma

132
Q

Supplies all lower teeth and gingivae and chin and lower lip

A

Inferior alveolar artery

133
Q

What connects the pterygoid plexus to the cavernous sinus

A

Emissary veins

134
Q

Route by which infections can spread to cranial cavity through teeth

A

Emissary veins

135
Q

Because of no valves in the veins of the head and neck, a esthetics can back flow into the

A

Tissues and cranial cavity

136
Q

Pterygoid plexus connects

A

Posteriorly small maxillary vein with retromandibular vein

Anteriorly , deep facial Vein with facial vein

137
Q

Four Quadrangular structures in TF and ITF

A

Masseter
Medial pterygoid
Ramus of mandible
Zygomatic bone

138
Q

3 fan shaped structures

A

Temporalis
Temporal fascia
Temporal fossa

General Anatomy (2 decks)

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