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Anatomy > Muscles of Facial Expression > Flashcards

Muscles of Facial Expression Flashcards

1
Q

What muscle supplies the angle of the mandible?

A

Great Auricular nerve.

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2
Q

What muscles makes up the scalp, forehead and eyebrows?

A

Occipitofrontalis.

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3
Q

What is the function of occipitofrontalis?

A

Retract the scalp, elevate the eyebrows and wrinkle the forehead.

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4
Q

What muscles surrounds the eye?

A

Orbicularis Oculi.

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5
Q

What is the function of Orbicularis Oculi?

A

Palpebral part- close the eyes gently
Orbital part- close the eyes tightly.

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6
Q

What muscle surrounds the lips?

A

Orbicularis Oris.

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7
Q

What is the function of Orbicularis Oris?

A

Close and protrude the lips.

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8
Q

What nerves supply orbicular Oculi?

A

Temporal and zygomatic branches of facial nerve.

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9
Q

What nerves supply by orbicularis oris?

A

Buccal and marginal mandibular branches of facial nerve.

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10
Q

What muscle makes up the cheek?

A

Buccinator

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11
Q

What is the function of buccinator?

A

Keeps food on the occlusal surfaces of the teeth and out of the oral vestibule.

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12
Q

What nerve innervates the buccinator?

A

Buccal branch of the facial nerve.

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13
Q

What muscles makes up the neck?

A

Platysma

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14
Q

What is the function of Platysma?

A

Tense the skin of inferior face/neck and depress the mandible.

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15
Q

What nerve supplies Platysma?

A

Cervical branch of facial nerve.

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16
Q

What are the five branches of the facial nerve?

A

Temporal
Zygomatic
Buccal
Marginal mandibular
Cervical

17
Q

What is Bell’s palsy?

A

Any type of facial paralysis that does not have any other associated causes.

18
Q

What are the potential causes of Bell’s palsy?

A

Infections
Otitis media (inflammation of the middle ear)
Diabetes
Trauma
Toxins
Temporarily by infiltration of LA to the facial nerve branches during dental treatment.

19
Q

To cause facial palsy during an IDB injection, where would you have to inject?

A

Needle placed too far distally and LA injected into the parotid gland
Affects all 5 terminal branches of the facial nerve.

20
Q

What symptoms would someone have if they had facial palsy?

A

Inability to close the eye or blink
Inability to raise corner of mouth or puff the cheeks
Inability to wrinkle forehead.

21
Q

What is the management of facial palsy?

A

Protect the eye with a loose damp cotton wool pad
Reassure the patient that sensation will resolve.

22
Q
A

Anatomy (7 decks)

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