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Oral Anatomy Muscles > SMILE Muscles > Flashcards

SMILE Muscles Flashcards

1
Q

How many muscles are involved in making a smile?

A

4

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2
Q

What nerve control the muscles to smile?

A

Nerve VII (7)

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3
Q

What are the muscles involved in making a smile?

A

Zygomaticus major, zygomaticus minor, levator anguli oris, and risorius

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4
Q

What is the action of the zygomaticus major?

A

Pulls the angle of the mouth superior and laterally

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5
Q

What is the origin of the zygomaticus major?

A

Zygomatic bone

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6
Q

Where is the insertion of the zygomaticus major?

A

Skin at the angle of the mouth

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7
Q

What nerve controls the zygomaticus major?

A

Nerve VII (7)

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8
Q

What is the action of the zygomaticus minor?

A

Pulls the angle of the mouth superior and laterally

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9
Q

What is the origin of the zygomaticus minor?

A

Just medial to the zygomaticus major

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10
Q

Where is the insertion of the zygomaticus minor?

A

Skin of the upper lip just lateral to the levator labii superioris (LLS)

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11
Q

What nerve controls the zygomaticus minor?

A

Nerve VII (7)

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12
Q

What is the action of the levator anguli oris?

A

Pulls the angle of the mouth superior and laterally

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13
Q

What is the origin of the levator anguli oris?

A

Canine fossa of the maxilla (it is deeper than the zygomaticus minor)

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14
Q

Where is the insertion of the levator anguli oris?

A

The skin at the angle of the mouth

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15
Q

What nerve controls the levator anguli oris?

A

Nerve VII (7)

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16
Q

What is a fascia?

A

Shinny transparent tissue that surrounds the muscle

17
Q

What is shinny transparent tissue that surrounds the muscle?

A

Fascia

18
Q

What is the action of the risorius?

A

widens the mouth (pulls corners laterally)

19
Q

What muscle of the smile muscles isn’t attached to bone?

A

Risorius

20
Q

What is the origin of the risorius?

A

Superficial fascia of the masseter

21
Q

Where is the insertion of the risorius?

A

Skin at the angle of the mouth

22
Q

What is the nerve that controls the risorius?

A

Nerve VII (7)

Oral Anatomy Muscles (7 decks)

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