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Neuro > Scalp And Superficial Face > Flashcards

Scalp And Superficial Face Flashcards

1
Q

What CN closes the eye?

A

Facial N.
Facial N.
Facial N.

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2
Q

What will the parotid duct dive into?

A

Buccinator M.

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3
Q

What nerve and vasculature goes thru parotid gland?

A

Retromandibular v.
External carotid a.
Facial n.

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4
Q

What innervates the parotid gland?

A

CN 9 via lesser petrosal n.

Traveling on auriculotemporal n. (V3)

Synapsing in otic ganglion

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5
Q

How does the facial nerve exit the skull and then the face?

A

Internal acoustic meatus

Stylomastoid foramen

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6
Q

What does the facial n. Provide motor innervation to?

A

Muscles of facial expression

Temporal, zygomatic, buccal, mandibular, cervical branches

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7
Q

What does the sensory roots of facial n. Do?

A

Taste to ant. 2/3 of tongue via Chorda tympani

Lacrimal, nasal, submandibular, and sublingual glands

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8
Q

What is the pathway of the facial n. ?

A

Thru internal meatus
To geniculate ganglion
From here greater petrosal goes to lacrimal gland

To facial canal
Stapedius branch goes off
Chorda tympani branch goes off

Then out of stylomastoid foramen
Facial n. To muscles of facial expression, Platysma, post. Belly of digastric, etc.

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9
Q

What are the branches of V1?

A 
Supraorbital 
Supratrochlear
Lacrimal n.
Infratrochlear n. 
Anterior ethmoidal n.
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10
Q

What are the branches of V2?

A

Infraorbital n.
Zygomaticofacial
Zygomaticotemporal

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11
Q

What are the branches of the V3?

A

Inferior alveolar n. —> mental n.
Buccal
Auriculotemporal

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12
Q

What are the major muscles of facial expression?

A 
Occipitofrontalis M. 
Orbicularis oculi 
Orbicularis iris
Buccinator 
Depressor annuli iris
Levator labii superioris
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13
Q

What are the actions of occipitofrontalis?

A

Wrinkles forehead

Innervated bilaterally by facial n.

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14
Q

Action of:

Orbital part of orbicularis oculi?

A

Help tightly close eye

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15
Q

Action of:

Palpabrae part of orbicularis oculi?

A

Help gently close eye

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16
Q

Action of:

Lacrimal part of orbicularis oculi?

A

Open lacrimal sac for tears

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17
Q

Action of:

Orbicularis oris

A

Sphincter that keeps mouth shut

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18
Q

Action of:

Buccinator

A

Keeps cheek taut during chewing

19
Q

Action of:

depressor anguli oris?

A

Depresses angle of mouth

20
Q

What are the muscles of mastication?

Innervated by?

A

Temporalis
Masseter
Lateral pterygoid
Medial pterygoid

CN V3

21
Q

What are the anastomoses of the face?

A 
L. And R. Superior labial a. 
L. And R. Inferior labial a. 
Angular a. And supratrochlear a. 
Supraorbital and superficial temporal a. 
Lacrimal a. And middle meningeal a. 
Sphenopalatine a. And ethmoidal a.
22
Q

What are the branches of facial a.?

A

Superior labial
Inferior labial
Lateral nasal
Angular

23
Q

What does Superifical temporal a. And v. Run iwth?

A

Auriculotemporal n.

24
Q

What is the artery you can hear next to your ear when you are trying to sleep/

A

Superficial temporal a.

25
Q

What does the deep facial vein connect to and where will that eventually lead?

A

Pterygoid venous plexus

PVP will go back to cavernous sinus

26
Q

What are the layers of the scalp?

A 
Skin
CT
Aponeurosis
Loose Ct
Pericranium
27
Q

What is “scalp proper”?

A

Skin
CT
Aponeurosis

28
Q

What is contained within the skin of scalp?

A

Sweat, sebaceous glands, Neurovascular

29
Q

What is contained w/i CT layer of scalp?

A

Blood vessels

Nerves

30
Q

What does the aponeurosis do?

A

Connects occipitalfrontalis m. To head

31
Q

What is contained int he pericardium?

A

Lots of vasculature and nerves

Will hurt hitting bone

32
Q

Why do cuts to the scalp bleed profusely?

A

Lots of neurovasculature in the skin and ct.

NV in dense connective tissue of scalp

33
Q

What types of incisions are made during surgery to preserve the NV found in the dense connective tissue of the scalp?

A

U-shaped incision

34
Q

How do you get a gaping wound vs. a non-gaping wound?

A

Gaping wound: cut scalp thru aponeurosis

Non-gaping: cut only first two layers of skin

35
Q

Which layer of the scalp would an infection spread thru quickly?

What veins would it lead to and where on from there?

A

Loose ct of scalp

Emissary vein

Go to dural sinuses

36
Q

Where do tonsils drain to?

A

Jugulodigastric deep cervical L.N.s

37
Q

What is Herpes Zoster?

A

Latent Chicken pox and shingles

Can go into sensory ganglion

38
Q

What is shingles?

A

Deactivation of chicken pox virus

39
Q

How does herpes zoster manifest?

A

Affects sensory ganglion like trigeminal so it will follow innervation of N.

V1= bridge of nose and forehead

V2 = medial cheeks and upper lip

V3 = lateral cheeks and lower lips

Can also get it in dorsal root ganglion and affect dermatomes maps of UE

40
Q

What does the Stapedius m. Do? What innervates it?

A

Dampens sound

Stapedius branch of facial n. Coming off within facial canal

41
Q

If you have a lesion of CN 7 at level of IAM, what results?

A 
Bell’s palsy
Loss of tear production
Increased sound
No taste to ant. 2/3 of tongue
Submandibular and sublingual glands do not work
42
Q

If you have a lesion of CN 7 at level of facial canal, what results?

A

Facial canal is where chorda tympani and Stapedius come off
So after the canal,

Bell’s palsy
No chorda tympani
No innerv. To submandibular or sublingual glands

43
Q

What is Bell’s palsy? What is its clinical cause and consequence?

A

Lesion of CN 7 causing ipsilateral paralysis of facial muscles

Cannot close eye
Unable to blin
Cannot tightly close mouth
Cannot blow a kiss, suck on a straw

Neuro (18 decks)

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