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A-CNS Anatomy > Temporal and Infratemoral fossa+TMJ > Flashcards

Temporal and Infratemoral fossa+TMJ Flashcards

1
Q

بسم الله الرحمن الرحيم وبه نستعين
___________________
Temopral fossa is shallow arch in the —-side of skull separated from the infratemproal fossa by———–

A

Lateral side
Zygomatic arch

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2
Q

Boundaries of Temporal fossa ?

A

Superior : superior temporal line
Inferior :Zygomatic Arch
Anterior : zygomatic process of frontal + frontal process of zygoma
lateral: Temopral Fascia
Medial : Frontal + temporal+ Parital+ Greater wing of sphenoid at pterion

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3
Q

Mention contents of Tempral fossa

A

Muscles : Temporalis
__________________
Nerves :ZAD TEMPORAL
Zygomaticotempral deep
Auriclotempral superficeal
Deep Temopral nerve FROM mandibular nerve
________________
Arteries :
Superficial temoral art Of ECA
Middle temoral artery from above
Deep temoral artery from Maxillary of ECA

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4
Q

Infratemporal fossa is situated ….and……. to zygomatic arch

A

Below and medial

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5
Q

Infratemopral fossa between
……..laterally and …..medially

A

ramus of mandible laterally
Lateral of Pharynx medilally

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6
Q

Boundarires of infratempral fossa

A

=Superiorly : greater wing of sphenoid
anterior post Maxilla
=Post: syloid process
=Medially: lateral pterygoid plate + lateral wall of pharynx
=Laterally: Ramus of Mandible

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7
Q

Mention connections of Infratemoral fossa

A

1-Temopral via zygmotaic arch
2-Oribt via Inferior Orbital fissure
3-Pterygopalatine fossa via pterygomaxillary fissure
4-Middle cranial fossa via foramne ovale+ Spinosum

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8
Q

Mention Contents of Infratemporal fossa

A

Muscles :
Lateral and medial pterygoid muscles of mastications + tensor palatine
_________________
Nerves: MOC
Mandibular and branches
Otic ganglion
Chorda Tympani
________________
Vessels:
Maxillart artery first and second parts giving middle and accessory meingeal artires
Pterygoid venous pleux
_________________
Ligament SphenoMandibular Ligamnet

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9
Q

Muscles of Mastications

A

Tempralis
Medial and lateral Pterygpoid
Masseter
4 Muscles for mastication

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10
Q

Common characteristic of muscle of mastications ?

A

From first Phayngeal arch
Supplied by Mandibular Nerve
Arise from skull
inserted into Mandible
Controlloing TMJ

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11
Q

Mention general actions of mastications
?

A

Depression
Elevation
Protraction
Retraction

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12
Q

The only muscle retract mandiblre>?

A

Posteror horizontal Termporalis

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13
Q

Describe Temporlias muscle

A

Origiate from floor of temoral fossa and deep fascia
Inserted into the coronoid process except lateral surfaces externds to anterior ramus till last molar
_________________
Nerve supply : anterior division of Mandibular Nerve
________________
Actions :
Anterior Vertical for ?
Elevation of mandible
Posterior Horizontal for ?
Retracion of Mandible

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14
Q

Describe masseter

A

Originate :
Superficial head : from the ant 2/3 of the lower border of zygomatic arch
Deep head from the post 1/3 and inner surface of lower border of zygomatic arch
to be inserted into
lateral surface of ramus of mandible
_______________
Supplied by anterior Division of Mandibular Nerve
_________________
actions
Deep vertical for elevations
Sueprficial oblique Protruction

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15
Q

Tempralis + masseter +lateral ptergoid supplied by

A

Anteriro division of mandibular nerve

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16
Q

lateral Pterygoid + Masseter

A

Protratcion

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17
Q

Lateral Pterygoid Describe

A

Origins:
upper head from the infratemporal surface of the greater wing of Sphenoid
Lower Head from the lateral surface of pterygoif plate
inserted into Fovea + TMJ Capsule
________________
Supplied by anterior division of Mandibular Nerve
__________________
Actions :
1-Depress the madnibel
2-Protrude The mandible
3-side to side movements

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18
Q

Masseter and Tempralis

A

Elevation of mandible

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19
Q

describe medial pterygoid muscles

A

Originns\
Superficial Head from Maxillary tuberosity
Deep Head from the medial surface of lateral pterygoid plate
to be inserted in the medial surface of Angle of Mandible
_________________
Nerve Supply by Trunk of Mandibular Nerve
_______________
Actions :
Elevations
Protraction
Side to side movemnts with lateral Pterygoid

20
Q

كلهم يعملوا رفع للفلك السفلي ماعدا ؟

A

Lateral pterygoid

21
Q

كلهم يطلعوا الفك لقدام ماعدا ؟

A

Tempralis
retraction

22
Q

Type of TMJ ?

A

sYNOVIAL condylar joint

23
Q

Artiucluar surfaces of TMJ ?

A

In mandibular fossa
the articular tubercle of Zygomatic arch + Head of Mandible
=covered by fibrocartilage
Synovial membrane covering fiborus capsule

24
Q

Articular disc inside TMJ upper surface is ….. but lower is …….. and it is attacahed to ?

A

Concavo-Convex
Concave
________________
1-Fibrous capsule
2-Tendon of lateral pterygoid

25
Q

Ligaments supporting TMJ ?

A

Lateral temporomandibular ligament
SphenoMandiublar ligamnet
sTYLOMandibular ligament

26
Q

Lateral tempromandiublar ligament
describe

A

Lateral to fibrous capsle of TMJ
Attaced above to the tubcle on the root of zygomatic arch
below to the lateral surface of neck of mandible
_______________
Functions:
Limit posterio movment of Mandible
Preventing Head of mandbile disloaction
Protecting Ecternal Audiotry meatus

27
Q

describe shpenomandibular ligament

A

Medial to TMJ
attaced above: spine of sphenoid
below : lingula of Mandibular foramne
its remenant of First pharyngeal Arch

28
Q

Stylomandibular ligament

A

Is is condensation of the investing deep cervical Fascia
posterior to TMJ
______________
Attaced aboce to syloid process
below to angle of Mandible
___________________

29
Q

Deep cervical Fascia = Stylomandibular ligamnet separateS ?

A

Parotid From SubMandiublar Salivary glands

30
Q

At rest Describe TMJ

A

The two jaws separated by minimal interval
teeth are in occlusal position come into oppistion

31
Q

Depression describe TMJ

A

The head of Mandible rotated in lower surface of artiuclar disc
The head and articular disc pulled forward by lateral pterygoid
___________________
assisted by:
Diagastic
mylohyoid
Geniohyoid
Gravity

32
Q

During Elevation describe TMJ

A

Reversed Deprssion
The head of mandible and artiuclar disc pulled backwards
The head of mandiublar rotates on the lower surface of artiuclar disc
done by>
Tempralis
Deep head of Masseter
Medial Pterygoid

33
Q

describe TMJ during protraction

A

The head of Mandible and Articular Disc pulled forward as well as lower teeth
______________
Lateral Pterygoid assisted by medial Pterygoid
Superficial fibers of masseter

34
Q

Retratcion done by?

A

HOrizontal fibers of Temporalis

35
Q

Elevation done by?
dperssion ???

A

anterioro tempralis
deepmasseter
Medial pterygid
____________
lateral pterygoid

36
Q

Protraction ?
________________
Retraction ?

A

Lateral Pterygoid
Superficial fibers of Masseter
____________
posterio horizontal of Temporalis

37
Q

Dislocation of the joint TMJ mostsly …..why?

A

anterior
due to Lateral temporomanidublar ligamnet + external aduiory meatus posteiro to it

38
Q

”
قل نزله روح القدس من ربك بالحق ليثبت الذين آمنوا وهدي وبشري للمسلمين “

A
39
Q

Mention branches of main mandibukar trunk

A

Nervus spinosus &
n. to medial pterygoid passes otic ganglion without relay to supply tensor palati &
tensor tympani.

40
Q

Mention relations of mandibular trunk in infratemporal fossa

A

med: tensor palati &otic ganglion
lateral:lateral pterygoid
post: middle menigeal artery

41
Q

Describe blood & nerve supply of TMJ

A

superficial tempral + maxillary artery
________________
Auriclotemoral+ Massetric nerve

42
Q

Spheno-mandibular ligament is attached to…..of mandible, lies….to joint capsule

A

Lingula of mandibular foramen
Medial

43
Q

Stylo-mandibukar ligament lies ….to joint capsule, it separates ….from…..

A

Posterior
Parotid/submandibular gland

44
Q

Medial surface of lateral pterygoid is related to:

A

M, deep head of medial pterygoid & tensor palati
A, middle meningeal & maxillary arteries
N, mandibukar nerve trunk, otic ganglion & chorda tympani
L, spheno-mandibular ligament

45
Q

Lateral surface of lateral pterygoid is related to:

A

Ramus of mandible
Superficial head of medial ptergoid & tendon of temporalis
Maxillary a. & pterygoid venous plexus

46
Q

Mention the structures passing between 2 heads of lateral pterygoid

A

Buccal nerve
Maxillary artery

A-CNS Anatomy (27 decks)

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