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DH 111 Dental and Orofacial Anatomy > Muscles of Facial Expression > Flashcards

Muscles of Facial Expression Flashcards

1
Q

Epicranial

Location:
Region:
Origin:
Insertion:
Action:
A

Location: Scalp
Region: Frontal/occipital

Origin: Front belly: tendon
Occipital belly: occipital bone.

Insertion:FB- eyebrow/ root of nose 
OB- tendon
Action: surprise

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2
Q

Orbicularis Oculi

Location
Region
Origin
Insertion
Action
A 
Location: Surrounds the eye
Region: Orbital
Origin: Orbital rim, frontal bone, maxilla
Insertion: Lateral canthus
Action:Close eyelid, squinting
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3
Q

Corrugator Supercilii

Location
Region
Origin
Insertion
Action
A 
Location: Eyebrow
Region: Supraorbital
Origin: Frontal Bone
Insertion:Skin of eyebrow
Action: Frowning
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4
Q

Corrugator Supercilii

Location
Region
Origin
Insertion
Action
A 
Location: Eyebrow
Region: Supraorbital
Origin: Frontal Bone
Insertion:Skin of eyebrow
Action: Frowning
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5
Q

Obicularis Oris

Location
Region
Origin
Insertion
Action
A 
Location: Surrounds the mouth
Region: Oral
Origin: Mouth
Insertion: Labial Commissure 
Action: Closing and pursing lips, pouting, grimacing.
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6
Q

Buccinator

Location
Region
Origin
Insertion
Action
A

Location: Middle of cheek
Region: Cheek
Origin: Maxilla, mandible, pterygomandibular raphe
Insertion: Labial commissure
Action: compresses cheeks during swallowing

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7
Q

Risorius

Location
Region
Origin
Insertion
Action
A 
Location: below buccinator
Region: cheek
Origin: fascia superficial to masseter
Insertion: labial commissure
Action: stretching lips
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8
Q

Levator labii superioris alaque nasi

Location
Region
Origin
Insertion
Action
A 
Location: under eye closer to nose
Region: infraorbital
Origin: maxilla
Insertion: ala, upper lip
Action: raising upper lip, dialating nares with sneer
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9
Q

Zygomaticus Major

Location
Region
Origin
Insertion
Action
A 
Location: Upper cheek
Region: cheek
Origin: Zygomatic bone
Insertion: Labial commissure
Action: smiling
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10
Q

Zygomatcus Minor

Location
Region
Origin
Insertion
Action
A 
Location: Upper cheek above major
Region: cheek
Origin: Zygomatic bone
Insertion: upper lip
Action: raising upper lip to assist in smiling.
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11
Q

Levator anguli oris

Location
Region
Origin
Insertion
Action
A 
Location: between major and minor
Region: cheek
Origin: maxilla
Insertion: labial commissure
Action: smiling
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12
Q

Depressor anguli oris

Location
Region
Origin
Insertion
Action
A 
Location: distal side of chin
Region: chin
Origin: mandible
Insertion: labial commissure
Action: frowning
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13
Q

Depressor labii inferioris

Location
Region
Origin
Insertion
Action
A 
Location: side of chin, proximal to anguli oris. 
Region: chin
Origin: mandible
Insertion: lower lip
Action: lowering lower lip
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14
Q

Corrugator Supercilii

Location
Region
Origin
Insertion
Action
A 
Location:
Region:
Origin:
Insertion:
Action:
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15
Q

Mentalis

Location
Region
Origin
Insertion
Action
A 
Location: Center of chin
Region: chin
Origin: mandible
Insertion: chin
Action: Raising chin and protruding lower lip.
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16
Q

Platysma

Location
Region
Origin
Insertion
Action
A 
Location: lower cheek and neck
Region: chin/neck
Origin: clavicle/shoulder
Insertion: mandible/mouth
Action: Raising neck skin, grimacing.

DH 111 Dental and Orofacial Anatomy (15 decks)

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