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CNS > [ANAT] TEMPOROMANDIBULAR JOINT > Flashcards

[ANAT] TEMPOROMANDIBULAR JOINT Flashcards

1
Q

tmj type

A

synovial-condylar

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2
Q

head of mandible articulates with

A

mandibular fossa
articular tubercle

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3
Q

articular surfaces are covered by

A

fibrocartilage

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4
Q

capsule is attached to

A

margins of articular surfaces

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5
Q

fibrous capsule is lined by

A

synovial membrane

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6
Q

articular disk is formed of

A

fibrocartliage

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7
Q

articular disk upper surface is

A

concavo-convex

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8
Q

articular disk lower surface is

A

concave

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9
Q

articular disk upper surface fits

A

mandibular fossa

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10
Q

articular disk lower surface fits

A

head of mandible

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11
Q

which structures are attached to the articular disk

A

fibrous capsule
tendon of lateral pterygoid

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12
Q

joint cavity is divided into upper & lower compartment by

A

articular disk

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13
Q

temporo-mandibular ligament is attached to

A

1- on root of zygomatic process
2- outer surface of neck of mandible

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14
Q

role of temporo-mandibular ligament

A

1-limits posterior movement &
2-prevents posterior dislocation
3-protects external auditory meatus

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15
Q

stylomandibular ligament extends from

A

apex of styloid process—> angle of mandible

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15
Q

stylomandibular ligament extends from

A

apex of styloid process—> angle of mandible

16
Q

structures separated by stylomandibular ligament

A

parotid gland & submandibular gland

17
Q

ligament posterior to capsule

A

stylomandibular ligament

18
Q

ligament lateral to capsule

A

temporo-mandibular ligament

19
Q

stylomandibular ligament is a condesation of

A

investing layer of deep cervical fascia

20
Q

ligament medial to capsule

A

spheno-mandibular ligament

21
Q

condesation of investing layer of deep cervical fascia

A

stylomandibular ligament

22
Q

embryological remnants of 1st pharyngeal arch

A

sphenomandibular ligament

23
Q

sphenomandibular ligament extends from

A

spine of sphenoid—>lingula of mandibular foramen

24
Q

position of jaws when closed

A

occlusal position

25
Q

at rest, the 2 jaws are separated by

A

minimal interval

26
Q

blood supply of TMJ

A

superficial temporal artery
maxillary artery

27
Q

nerve supply of TMJ

A

auriculotemporal nerve
masseteric nerve

28
Q

dislocation of TMJ happens in which direction

29
Q

TMJ lies in front of which structure

A

external auditory meatus

30
Q

depression of mandible is initiated by

A

lateral pterygoid

31
Q

depression of mandible is assisted by

A

digastric
geniohyoid
mylohyoid
gravity

32
Q

elevation of mandible is performed by

A

temporalis
masseter
medial pterygoid

33
Q

protrusion of mandible is done by

A

masseter
medial pterygoid
lateral pterygoid

34
Q

retraction of mandible is done by

A

temporalis (post. fibers)

35
Q

side to side movement (chewing) is done by

A

medial & lateral pterygoid

CNS (29 decks)

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