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Second Year Anatomy -Head and Neck > Muscles of mastication > Flashcards

Muscles of mastication Flashcards

1
Q

What does the the codyle (head) of mandible articulate with?

A

The mandibular fossa of temporal bone

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2
Q

What passes through teh mandibular foramen?

A

Inferior alveolar nerve

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3
Q

What passes along the mylohyoid groove?

A

Mylohyoid nerve

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4
Q

What does the TMJ articulate with?

A

Condyle

Mandibular fossa

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5
Q

What surrounds the TMJ and what ligaments are present?

A

Fibrous capsule
Lateral ligament
Stylomandibular ligament
Sphenomandibular ligament

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6
Q

What divides the TMJ and into what?

A

Fibrocatilaginous disc
2 cavities - superior articular cavity
and inferior articular cavity

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7
Q

What movements do the TMJ allow?

A 
Elevation 
Depression 
Retraction 
Proctraction 
Lateral deviation
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8
Q

What are the muscles of mastication?

A

Temporalis, masseter

Medial and lateral pterygoid

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9
Q

What nerve innervates temporalis?

A

Deep temporal nerves

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10
Q

Where does temporalis insert?

A

Coronoid process

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11
Q

What is resonsible for the elevatation of mandible?

A

Anterior fibres verticallt arranged

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12
Q

What is responsible for retraction of mandible?

A

Post fibres verticallt arranged

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13
Q

What nerve innervates masseter?

A

Massteric nerve

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14
Q

What is the action of masseter?

A

elevates mandible

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15
Q

Wher is the origin of masseter?

A

Zygomatic arch

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16
Q

Where does masseter insert?

A

Ramus and angle of mandible

17
Q

Action of pterygoids?

A

Moving side to side- chewing

18
Q

What innervates pterygoids?

A

Nerves to medial and lateral pterygoids

19
Q

Origin of medial pterygoid

A

superficial - tuberosity of maxilla

Deep- medial aspect of LPP

20
Q

Insertion of medial pterygoid

A

Inner aspect of ramus and agnle of mandible

21
Q

Origin of lateral pterygoid

A

Upper- GW of sphenoid

Lower Lateral surface of latetral pterygoid

22
Q

Insertion of lateral pterygoid

A

Upper - joint capsule and articular disc

Lower - neck of mandible

Second Year Anatomy -Head and Neck (20 decks)

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