OCB04-2004 Face and Scalp Flashcards

1
Q

What are the 3 branches of trigeminal nerve?

A

Opthalmic
Maxillary
Mandibular

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2
Q

Which of the trigeminal branches are sensory or motor?

A

v1: sensory
v2: sensory
v3: mixed

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3
Q

Where does the ophthalmic branch pass through?

A

Superior orbital fissure

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4
Q

Where does the maxillary branch pass through?

A

Foramen rotundum

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5
Q

Where does the mandibular branch pass through?

A

Foreamen ovale

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6
Q

What is the only moveable facial joint?

A

TMJ

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7
Q

What cavity does the trigeminal ganglion occupy?

A

Meckel’s cave

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8
Q

Where is the Meckel’s cave located?

A

In the dura mater near the apex of the petrous part of the temporal bone

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9
Q

What is V1 sensory to?

A

Skin of most of the forehead
Conjunctivia and upper eye lid
Bridge of the nose and frontal sinus
Antero-superior nasal cavity

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10
Q

What is the v2 branch sensory to?

A

Skin of the cheek, upper lip

upper teeth, gums, hard and soft palate, maxillary sinus, posterior- inferior nasal cavity

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11
Q

What is the v3 branch of the trigeminal nerve sensory to?

A

Skin of the temple

And most of the skin over the lower jaw

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12
Q

What area of skin of the lower jaw is not innervated by v3?

A

Skin over the angle of the jaw

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13
Q

What is v3 branch motor to?

A

Muscles of mastication and tensor tympani, tensor palatine and anterior belly of digastric

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14
Q

What does v3 enter the mandibular bone through?

A

Mandibular foreamen

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15
Q

What is the plexus of the maxillary nerve called?

A

Superior dental plexus

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16
Q

What is the plexus of the mandibular nerve called?

A

inferior dental plexus

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17
Q

What is trigeminal neuralgia?

A

pain coming from the trigeminal nerve
Sudden severe pains that come from one or more branches of the trigeminal nerve
That usually affects one side of the face

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18
Q

What branches are most commonly affected in trigeminal neuralgia?

A

The second and third branches so pain is around the cheek or jaw

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19
Q

What is trigeminal neuralgia caused by?

A

Movement of a blood vessel, which is often due to inflammation, which consequently presses on the root of the nerve

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20
Q

What drug is used to calm the pain in trigeminal neuralgia?

A

carbamezepine

which is an anticonvulsant,

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21
Q

What occurs if carbamezepine is ineffective?

A

Surgical management which involves a craniotomy at the dural sinus, where there is relief of pressure and subsequently pain

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22
Q

What are the further branches of v1 called?

A

Supraorbital and Supratrochlear branches

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23
Q

What are the further branches of v2 called?

A

Infraorbital branch

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24
Q

What are the further branches of v3 called?

A

Mental (lower jaw)

Auriculotemporal (ears)

25
Q

What branches off the right side of the aortic arch?

A

Brachiocephalic artery

26
Q

What does the brachiocephalic artery further divide to?

A

Right subclavian artery and right common carotid artery

27
Q

What does the left side of the aortic branch divide to?

A

Left common carotid and left subclavian artery

28
Q

What do the common carotid arteries split to form?

A

internal and external carotid arteries

29
Q

What level does the common carotid split at?

A

C4

30
Q

What does the internal carotid artery supply?

A

Brain

31
Q

What does the external carotid artery supply?

A

Face and head

32
Q

What does the external carotid artery branch off to form?

A

Internal maxillary artery

33
Q

What does the infraorbital artery supply?

A

Skin of the orbital area

34
Q

What does the greater palatine artery supply?

A

Roof of the mouth

35
Q

What branches off the internal maxillary artery?

A

Middle meningeal artery

Inferior alveolar artery

36
Q

How does the inferior alveolar artery enter the mouth?

A

Mandibular foreamen

37
Q

Where does the facial artery branch from?

A

External carotid artery

38
Q

What are the names of the facial muscles?

A
Frontalis 
Occipitalis
Orbicularis oculi
Orbicularis oris
Buccinator
Zygomaticus 
Platysma
39
Q

What muscles make up the epicranius?

A

Frontalis and occipitalis

40
Q

What action does the frontal and occipitals perform?

A

Raising eyebrows

41
Q

What action does orbiculares oculi perform?

A

Blinks and closes eyes

42
Q

What action does the orbiculares oris perform?

A

Closes and protrudes lips

43
Q

Wha action does the buccinator perform?

A

Flatten cheek against teeth

44
Q

What action does the zygomaticus perform?

A

Raises corner of mouth

45
Q

What action does the platysma perform?

A

Draws mouth downwards

46
Q

How do facial muscles differ from other muscles?

A

Most muscles have 2 bony attachments- however the muscles of the face may have a bony attachment but the insertion is into the skin

47
Q

What are the 5 branches of the facial nerve?

A
Temporal
Zygomatic
Buccal
Mandibular
Cervical
48
Q

What is Bell’s palsy?

A

The paralysis of the muscles on one side of the face due to swelling of the facial nerve

49
Q

How do you treat Bell’s palsy?

A

It slowly improves or completely goes away in one to three month
Most people recover, but some are left with weakness on one side of the face

50
Q

Why may swelling of the parotid gland be painful?

A

Results in mumps

Parotid contains terminal branches of the facial nerve

51
Q

What does the scalp consist of?

A
Skin
Dense connective tissue
Occipital-frontalis Aponeurosis
Loose connective tissue
Periosteum
52
Q

What is the cutaneous innervation of the scalp via?

A

Supraorbital nerve of V1 of trigeminal nerve supplies the front
Auriculotemporal nerve of V3 of trigeminal nerve supplies the side
Greater occipital nerve of C2 supplies the back
Less occipital nerve of C2 supplies the side

53
Q

What is the arterial supply of the scalp via?

A

Superficial temporal artery
Supraorbital artery
Occipital and posterior auricular arteries

54
Q

What is Panda eyes?

A

The loose connective tissue running in the occipital-frontalis muscle allows bacteria or fluid to pass freely from the posterior aspect of the scalp into the eyelids in the front
Trauma in the back of the head can result in blood showing up in the eyelids

55
Q

How does blood get around the eyes in Panda’s eyes?

A

It passes freely from the posterior aspect of the scalp to the eyelids

56
Q

Why is mumps so painful?

A

The parotid glands has terminal branches in the facial nerve

57
Q

What nerve is at risk in operations on the parotid gland?

A

Facial

58
Q

In a newborn, what reflex is absent if the facial nerve is damaged?

A

Corneal

59
Q

How would you test the facial nerve?

A

By performing voluntary facial movements, e.g. smiling, frowning, closing eyes tightly, etc. and assessing the symmetry on the face.