Bell's Palsy Flashcards

1
Q

Damage to which nerve causes Bell’s palsy?

A

Facial Nerve (CN VII)

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2
Q

What are the 5 branches of the facial nerve?

A

1) temporal
2) zygomatic
3) buccal
4) mandibular
5) cervical

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3
Q

Name 5 muscles/ muscle groups innervated by the facial nerve:

A

1) facial muscles
2) stapedius muscle (inner ear)
3) posterior digastric
4) stylohyoid
5) platysma

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4
Q

What sensory innervation does the facial nerve supply?

A

taste to the anterior 2/3 of the tongue

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5
Q

What three glands does the facial nerve provide parasympathetic supply to?

A

1) submandibular
2) sublingual
3) lacrimal

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6
Q

Fill in the gap: each side of the forehead has upper motor innervation from ____ (both/one) sides of the brain

A

both

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7
Q

Fill in the gap: each side of the forehead has lower motor innervation from ____ (both/one) sides of the brain

A

One

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8
Q

True or false: the forehead will be spared in an UMN lesion of the facial nerve

A

True

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9
Q

True or false: the forehead will be spared in a LMN lesion of the facial nerve

A

false

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10
Q

Give two causes of UMN lesions in the facial nerve:

A

1) stroke
2) tumours

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11
Q

What is Bell’s palsy?

A

idiopathic unilateral lower motor neurone facial nerve palsy

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12
Q

What is thought to be a common cause of Bell’s palsy?

A

viral infection

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13
Q

Give two presentations associated with Bell’s palsy:

A

1) drooping of the eye lid (unilateral)
2) loss of the nasolabial fold (unilateral)

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14
Q

What drug may be given in cases of Bell’s palsy?

A

prednisolone

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15
Q

What is given to prevent the eye from drying out in Bell’s palsy?

A

lubricating eye drops

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