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Anatomy > Superficial Face - Muscles of Facial Expression - Muscles of the Mouth > Flashcards

Superficial Face - Muscles of Facial Expression - Muscles of the Mouth Flashcards

1
Q

What are the muscles of the Mouth?

A

Depressor Anguli Oris, Zygomatic Major and Minor, Levator Labii Superioris, Levator Anguli Oris, Depressor Labii Inferioris, Buccinator, Orbicular Oris

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2
Q

What is the origin of the Depressor Anguli Oris muscle?

A

Oblique line of mandible

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3
Q

What is the insertion of the Depressor Anguli Oris muscle?

A

angle of the mouth

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4
Q

What is the nerve supply of the Depressor Anguli Oris muscle?

A

branches of facial nerve (CN VII)

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5
Q

What is the action of the Depressor Anguli Oris muscle?

A

acts to depress the corners of the mouth

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6
Q

What is the blood supply of the Depressor Anguli Oris muscle?

A

facial artery

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7
Q

What is noteworthy about the Depressor Anguli Oris muscle?

A

“frown” muscle

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8
Q

What is the origin of the Zygomatic Major and Minor muscles?

A

Zygomatic bone

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9
Q

What is the insertion of the Zygomatic Major and Minor muscles?

A

lateral corner of the mouth

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10
Q

What is the nerve supply of the Zygomatic Major and Minor muscles?

A

facial nerve (CN VII)

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11
Q

What is the blood supply of the Zygomatic Major and Minor muscles?

A

transverse facial artery

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12
Q

What is the action of the Zygomatic Major and Minor muscles?

A

act to raise the corner of the mouth and upper lip

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13
Q

What is noteworthy about the Zygomatic Major and Minor muscles?

A

“smile” muscles

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14
Q

What is the origin of the Levator Labii Superioris muscle?

A

infraorbital margin

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15
Q

What is the insertion of the Levator Labii Superioris muscle?

A

skin of upper lip

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16
Q

What is the innervation of the Levator Labii Superioris muscle?

A

buccal branch of facial nerve (CN VII)

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17
Q

What is the blood supply of the Levator Anguli Superioris muscle?

A

facial artery

18
Q

What is the action of the Levator Anguli Superioris muscle?

A

act to raises the upper lip

19
Q

What is noteworthy about the Levator Anguli Superioris muscle?

A

used to bare upper teeth, as in a sneer

20
Q

What is the origin of the Levator Anguli Oris muscle?

A

maxilla below the infraorbital foramen

21
Q

What is the insertion of the Levator Anguli Oris muscle?

A

corner of the mouth

22
Q

What is the innervation of the Levator Anguli Oris muscle?

A

buccal branch of facial nerve (CN VII)

23
Q

What is the blood supply of the Levator Anguli Oris muscle?

A

facial artery

24
Q

What is the action of the Levator Anguli Oris muscle?

A

act to raise the corner of the mouth

25
Q

What is noteworthy about the Levator Anguli Oris muscle muscle?

A

“smile” muscles

26
Q

What is the origin of the Depressor Labii Inferioris muscle?

A

mandible

27
Q

What is the insertion of the Depressor Labii Inferioris muscle?

A

skin of lower lip

28
Q

What is the innervation of the Depressor Labii Inferioris muscle?

A

marginal mandibular branch of facial nerve (CN VII)

29
Q

What is the blood supply of the Depressor Labii Inferioris muscle?

A

facial artery

30
Q

What is the action of the Depressor Labii Inferioris muscle?

A

depresses the lower lip

31
Q

What is noteworthy about the Depressor Labii Inferioris muscle?

A

used to bare lower incisor teeth

32
Q

What is the origin of the Buccinator muscle?

A

alveolar processes of mandible and maxilla

33
Q

What is the insertion of the Buccinator muscle?

A

angle of the mouth, orbicularis oris

34
Q

What is the innervation of the Buccinator muscle?

A

buccal branch of the facial nerve (CN VII)

35
Q

What is the blood supply of the Buccinator muscle?

A

facial artery

36
Q

What is the action of the Buccinator muscle?

A

keeps cheeks taut, whistling and chewing

37
Q

What is the origin of the Orbicularis Oris muscle?

A

skin and fascia of lips and surrounding lips

38
Q

What is the insertion of the Orbicularis Oris muscle?

A

skin and fascia of lips

39
Q

What is the innervation of the Orbicularis Oris muscle?

A

buccal branch of facial nerve (CN VII)

40
Q

What is the blood supply of the Orbicularis Oris muscle?

A

facial artery

41
Q

What is the action of the Orbicularis Oris muscle?

A

sphincter of the oral cavity, forms upper and lower lips, compresses lips against teeth, holds food during mastication

42
Q

What is noteworthy about the Orbicularis Oris muscle?

A

“kissing muscle”

Anatomy (17 decks)

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