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A&P of Speech And Swallowing > 7 Muscles Of The Jaw > Flashcards

7 Muscles Of The Jaw Flashcards

0
Q

Insertion of the temporalis m?

A

Coronoid process of the mandible.

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1
Q

Origin of the temporalis m?

A

Temporal bone

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2
Q

What nerve innervates the temporalis m?

A

CN V (Trigeminal)

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3
Q

Which muscle and nerve are the exceptions to the generalization that all jaw muscles are innervated by CN V (Trigeminal)?

A

Geniohyoid m. And it’s innervated by CN XII (Hypoglossal).

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4
Q

Action of the temporalis m?

A

Elevate jaw

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5
Q

Origin of the masseter m?

A

Zygomatic arch

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6
Q

Insertion of masseter m?

A

Angle and ramus of mandible.

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7
Q

Innervation of masseter m?

A

CN V (Trigeminal)

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8
Q

Action of masseter m?

A

Elevate jaw

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9
Q

Origin of medial pterygoid m?

A

Medial surface of lateral pterygoid plate.

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10
Q

Insertion of medial pterygoid m?

A

Medial surface of angle of mandible

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11
Q

Innervation of medial pterygoid m?

A

CN V (Trigeminal)

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12
Q

Action of medial pterygoid m?

A

Elevate jaw

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13
Q

Origin of lateral pterygoid m?

A

Lateral surface of lateral pterygoid plate

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14
Q

Insertion of lateral pterygoid m?

A

Condylar process of mandible

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15
Q

Innervation of lateral pterygoid m?

A

CN V (Trigeminal)

16
Q

Actions of lateral pterygoid m?

A

1) protrude jaw (bilaterally)

2) move jaw laterally (unilaterally)

17
Q

If the mandible is anchored, what structure will the suprahyoid muscles move?

A

The larynx

18
Q

If the larynx is anchored, what structure will the suprahyoid muscles move?

A

The mandible

19
Q

Origin of the anterior belly of the digastric m?

A

Symphesis of mandible

20
Q

Insertion of anterior belly of digastric m?

A

Hyoid bone

21
Q

Innervation of anterior belly of digastric m?

A

CN V (Trigeminal)

22
Q

Action of anterior belly of digastric m when larynx is anchored?

A

Depress jaw

23
Q

Origin of mylohyoid m?

A

Mylohyoid groove of mandible

24
Q

Insertion of mylohyoid m?

A

Hyoid bone

25
Q

Innervation of mylohyoid m?

A

CN V (Trigeminal)

26
Q

Action of mylohyoid m when larynx is anchored?

A

Depress jaw

27
Q

Origin of geniohyoid m?

A

Symphesis of mandible

28
Q

Insertion of geniohyoid m?

A

Hyoid bone

29
Q

Innervation of geniohyoid m?

A

CN XII (Hypoglossal)

30
Q

Action of geniohyoid m when larynx is anchored?

A

Depress jaw

31
Q

Where is the geniohyoid m in relation to the mylohyoid m?

A

The geniohyoid m is deep and superior to the mylohyoid m.

A&P of Speech And Swallowing (7 decks)

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