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BMS271 Upper Limb Anatomy > TMJ > Flashcards

TMJ Flashcards

1
Q

Temporalis

A

Temporal Fossa

Coronoid process and ramus of mandible

Elevates and retracts mandible

Mandibular Nerve

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2
Q

Medial Pterygoid

A

Lateral pterygoid plate
Medial surface of mandibular ramus

Elevates and protracts mandible
Small lateral chewing

Mandibular Nerve

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3
Q

Lateral pterygoid

A

Lateral Pterygoid plate
TMJ capsule and disc, and condyloid process of mandible

Protracts and depresses mandible
Large lateral chewing movements

Mandibular Nerve

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4
Q

Masseter

A

Zygomatic arch
Angle and Ramus of mandible

Elevates mandible

Mandibular Nerve

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5
Q

Lateral Ligament of TMJ

A

Thickening of TMJ capsule

Prevents posterior dislocation

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6
Q

Stylomandibular ligament

A

Thickening of capsule of parotid gland

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7
Q

Sphenomandibular ligament

A

Primary passive support of TMJ

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8
Q

What type of joint is the TMJ

A

Modified hinge joint

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9
Q

What movement does the TMJ allow

A

Flexion, extension

Rotation

Translation

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10
Q

What does the head of the mandible articulate with ?

A

Mandibular Fossa (mouth closed)

Articular tubercle of the temporal bone (when mouth is open)

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11
Q

Purpose of Post-Glenoid tubercle

A

Prevent posterior dislocation

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12
Q

What Nerve May be impacted upon with TMJ dislocation

A

Auriculotemporal nerve, Mandibular nerve and inferior alveolar Nerve (CNV 3)

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13
Q

Mandibular protraction on the left and retraction on the what occurs during what movement ?

A

Chin moving laterally to the right

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14
Q

Which way does the TMJ usually dislocate

A

Anteriorly (also slightly shifts medial)

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15
Q

How would a bilateral dislocation of the TMJ occur ?

A

Opening mouth too wide

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16
Q

What symptoms will result from jaw dislocation

A

Open locked jaw

Sharp pain in ear and teeth

Sensory loss in those areas

Referred pain to shoulder and neck

17
Q

What artery supplied the TMJ

A

Deep Auricular

18
Q

Name the intrinsic muscle group of the tongue

A

Superior longitudinal

Transverse

Vertical

Inferior longitudinal

19
Q

What are the extrinsic muscles of the tongue

A

Styloglossus

Hyoglossus

Genioglossus

Palatoglossus

20
Q

What Nerve innervates motor control over the tongue ?

A

Hypoglossal Nerve

Except Palatoglossus - Vagus Nerve

21
Q

What Nerve innervates general sensory of the anterior 2/3 of tongue

A

Lingual Nerve (CNV3)

22
Q

What Nerve innervates special sensory of anterior 2/3 of tongue

A

Chorda Tympani (CNV Vii)

23
Q

What Nerve innervates general and special sensory of the posterior 1/3 of the tongue

A

Glossopharyngeal Nerve

24
Q

What Nerve innervates a small portion of the posterior 1/3 of the tongue

A

Internal laryngeal Nerve (CN X)

25
Q

How common is cleft lip ?

A

1 in 1000 births

More common in males

26
Q

What is Cleft Lip

A

Tissue of upper lip fails to fuse

BMS271 Upper Limb Anatomy (15 decks)

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