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Dermatology Board Prep > DERM (23) Surgery > Anatomy > Flashcards

Anatomy Flashcards

1
Q

What nerve in the parotid area is affected in Frey’s syndrome?

A

Auriculotemporal branch of cranial nerve V

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2
Q

What occurs w/ injury to the buccal nerve?

A

Decreased sensation of the skin over the cheeks (not to be confused with buccal branch of the facial nerve)

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3
Q

What happens with injury to the mental nerve?

A

Decreased sensation to the front of the chin and lower lip

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4
Q

What is the function of the zygomaticofacial and zygomaticotemporal nerves?

A

Sensory nerves that supply sensation to the zygomatic arch and upper cheek

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5
Q

In what direction do lymphatics tend to drain?

A

Medial to lateral, and cephalad to caudad

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6
Q

What areas do the postauricular lymph nodes drain?

A

Posterior ear, parietal and mastoid scalp

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7
Q

What lymph node basin would the pre-auricular or anterior ear drain to?

A

Parotid or preauricular basin

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8
Q

Where does the occipital scalp drain to (lymph node basin)?

A

The occipital basin

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9
Q

Where does the nasal sidewall drain to (lymph node basin)?

A

Submental basin

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10
Q

What nerves innervate the orbicularis oculi muscle?

A

Temporal and superior zygomatic (upper portion) and the inferior zygomatic and buccal branches of the facial nerve (inferior portion)

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11
Q

What nerve innervates the frontalis muscle?

A

Temporal branch of the facial nerve

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12
Q

What muscles does the buccal branch of the facial nerve innervate?

A

Risorius, buccinator, levator muscles of the mouth, nasalis, orbicularis oris, and procerus

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13
Q

What muscles does the marginal mandibular branch innervate?

A

Depressor labii inferioris, depressor anguli oris, and mentalis

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14
Q

What muscles does the zygomatic branch innervate?

A

Obicularis oculi

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15
Q

What is the innervation of the conchal bowl?

A

Cranial nerves VII, IX, and X (ring blocks wont get this area)

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16
Q

What sensory nerve innervates the majority of the posterior ear?

A

Greater auricular nerve

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17
Q

What nerve innervates the majority of the helix/antihelix?

A

The greater auricular nerve (the auriculotemporal nerve is the upper quadrant of the ear if looking at it head-on…area medial to the mid superior helix and above the mid tragus)

18
Q

A ring block around the ear will numb all of the ear except for what?

A

The external auditory canal and the concha

19
Q

What muscle leads to “bunny lines”? What is its innervation?

A

Procerus, innervated by zygomatic branch of the facial nerve

20
Q

What is the primary muscle that moves the eyebrows up and down? What is its innervation?

A

Temporalis muscle, temporal branch of the facial nerve

21
Q

What muscles are primarily involved in scowling and what is their innervation?

A

Corrugator supercilii, innervated by the temporal branch of the facial nerve

22
Q

What muscles are the main contributors to smile and what is the innervation?

A

Zygomaticus major/minor and

Major: Buccal and zygomatic branches

Minor: just buccal branch of facial nerves

23
Q

What muscle closes the eyelid?

A

Obicularis occuli (upper portion), innervated by the temporal branch of the facial nerve

24
Q

What is the innervation of levator palpebrae superioris muscle and its innervation?

A

Elevate the eyelid (involved in ptosis if botox diffusion gets to it), innervated by CN III

25
Q

What muscles does the trigeminal nerve innervate?

A

Muscles of mastication: Masseter, temporalis, medial and lateral pterygoid

26
Q

The function can come back after injury to which branches of the facial nerve?

A

Buccal and zygomatic (have extensive rami and cross innervation)

27
Q

What is the innervation of the procerus muscle?

A

Zygomatic branch of the facial nerve

28
Q

What nerve from the cervical plexus innervates the anterior neck?

A

Transverse cervical

29
Q

What nerve from the cervical plexus innervates the anterior and posterior lobules of the ear and the skin over the mastoid process?

A

The greater auricular nerve

30
Q

What nerve innervates the lateral arch of the plantar foot?

A

The sural nerve (plantar)

31
Q

What nerve innervates the medial upper quadrant of the plantar surface of the foot and the medial 3 toes (big, second and half of 3rd) on the plantar surface?

A

The medial plantar nerve, which is a terminal branch of the posterior tibial nerve

32
Q

What nerve is susceptible to injury from surgeries on the lateral leg?

A

The common peroneal nerve as it wraps superficially around the head of the fibula

33
Q

Which muscle supplied by facial nerve VII is the only one that is supplied from the superficial side of the muscle rather than the deep side?

A

Buccinator

34
Q

What nerve supplies the heel of the foot?

A

The calcaneal nerve, branch of the posterior tibial nerve

35
Q

What 3 nerves must be blocked for a nerve block of the plantar foot?

A

Posterior tibial (just behind the medial malleolus), sural nerve (posterior to the lateral malleolus), and saphenous (above the medial malleolus)

36
Q

What nerve innervates the majority of the dorsal skin on the foot?

A

Superficial peroneal (fibular) nerve

37
Q

Which nerve supplies sensation to the tragus of the ear?

A

Auriculotemporal

38
Q

What nerve supplies innervation to the posterior lateral portion of the dorsal foot and lateral malleolus?

A

Saphenous nerve

39
Q

What muscles are innervated by the temporal branch of the facial nerve?

A

Frontalis, orbicularis oculi, corrugator supercilii

40
Q

Which of the named facial vessels are derived from the internal carotid artery?

A

Supratrochlear, supraorbital, palpebral, dorsal nasal, lacrimal arteries (branches of the ophthalmic artery which comes from internal carotid artery… others (angular for example) are from the external carotid artery

41
Q

Where would an anesthetic be placed for a median nerve block?

A

Between the bodies of the flexor digitorum superficialis and the flexor digitorum produndus

DERM (23) Surgery (12 decks)

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