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Head and Neck Anatomy > Muscles of Mastication (week 2) > Flashcards

Muscles of Mastication (week 2) Flashcards

0
Q

Origin of Masseter muscle (Deep head)

A

Inner aspect of zygomatic arch and inner border of post. 1/3

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1
Q

Origin of Masseter muscle (superficial head)

A

Anterior 2/3 of Zygomatic arch

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2
Q

Origin of Temporalis

A

Temporal fossa and fascia

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3
Q

Insertion of Masseter

A

Lateral surface of ramus and angle of mandible

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4
Q

Insertion of Temporalis muscle

A

Coronoid process and anterior border of ramus of mandible

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5
Q

Action of Temporalis muscle

A

Elevate and retrude the mandible

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6
Q

Action of Masseter muscle (Superficial)

A

Elevate, protrude the mandible

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7
Q

Action of Masseter muscle (Deep head)

A

Retrude from a protruded position

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8
Q

Origin of Lateral pterygoid muscle (Superficial head)

A

Roof of infratemporal fossa - greater wing of sphenoid

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9
Q

Origin of Lateral Pterygoid muscle (Inferior head)

A

Lateral surface of lateral pterygoid plate

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10
Q

Action of Lateral pterygoid muscle

A

Move mandible to opposite side

Together: Protrude the mandible

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11
Q

Origin of Medial Pterygoid muscle

A

Medial surface of lateral pterygoid plate and maxillary tuberosity

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12
Q

Insertion of Medial Pterygoid muscle

A

Medial surface of ramus of mandible

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13
Q

Insertion of Lateral Pterygoid muscle (Superior head)

A

Pterygoid fovea, TMJ capsule and disc.

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14
Q

Insertion of Lateral Pterygoid muscle (Inferior head)

A

Pterygoid fovea

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15
Q

Action of Medial Pterygoid muscle

A

Elevate and protrude the mandible

16
Q

Origin of Buccinator muscle

A

Pterygomandibular raphae, buccal alveolar process of mandible and maxilla

17
Q

Insertion of Buccinator

A

Orbicularis oris fibers

18
Q

Action of buccinator

A

compress cheeks to push food onto teeth

19
Q

Nerve to Buccinator muscle

A

CN VII

Head and Neck Anatomy (35 decks)

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