Facial Muscles Flashcards

1
Q

Occipitofrontalis muscle action

A

wrinkles forehead by raising eyebrows

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2
Q

Occipitofrontalis muscle innervation

A

facial nerve

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3
Q

Orbicularis Oculi action

A

closes eyes tightly

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4
Q

Orbicularis Oculi innervation

A

Facial Nerve

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5
Q

Superior levator palpebrae action

A

lifts upper eyelid

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6
Q

Superior levator palpebrae innervation

A

Oculomotor Nerve

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7
Q

Orbicularis Oris action

A

closes and protrudes lips, important in articulation of speech

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8
Q

Orbicularis Oris innervation

A

facial nerve

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9
Q

Buccinator action

A

presses cheeks firmly against teeth, active in smiling, keeps the cheeks taut thereby preventing it from folding and being injured during chewing

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10
Q

Buccinator innervation

A

facial nerve

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11
Q

Mylohyoid (suprahyoid muscle) action

A

elevates hyoid, floor of mouth, and tongue during swallowing and speaking

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12
Q

Geniohyoid (suprahyoid muscle) action

A

pulls hyoid anterosuperiorly

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13
Q

Stylohyoid (suprahyoid muscle) action

A

elevates and retracts hyoid

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14
Q

Digastric (suprahyoid muscle) action

A

elevates and steadies hyoid during swallowing and speaking

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15
Q

Sternohyoid (infrahyoid muscle) action

A

depresses hyoid after elevation during swallowing

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16
Q

Omohyoid (infrahyoid muscles) action

A

depresses, retracts, and steadies hyoid

17
Q

sternothyroid (infrahyoid muscle) action

A

depresses hyoid and larynx

18
Q

thyrohyoid (infrahyoid muscle) action

A

depresses hyoid and elevates larynx

19
Q

Masseter action

A

elevates and protrudes mandible

20
Q

masseter innervation

A

mandibular nerve (CN V3)

21
Q

medial pterygoid action

A

Acting bilaterally, protrudes and elevates mandible

acting unilaterally, produces side to side movements

22
Q

medial pterygoid innervation

A

mandibular nerve (CN V3)

23
Q

temporalis action

A

elevates mandible

24
Q

temporalis innervation

A

mandibular nerve (CN V3)

25
Q

lateral pterygoid action

A

acting bilaterally, protrudes mandible

acting unilaterally, produces side to side grinding

26
Q

lateral pterygoid innervation

A

mandibular nerve (CN V3)