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clinical human anatomy: head and neck > Mixed Motor Nerves > Flashcards

Mixed Motor Nerves Flashcards

1
Q

What nerve is CN V

A

Trigeminal

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2
Q

What division is V1?

A

Opthalmic division of Trigeminal

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3
Q

Function on V1?

A

somatic sensory: sensory from skin of forehead, scalp, mucous membranes (nasal)

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4
Q

What is the location on NCB of V1?

A

Trigeminal (semilunar) ganglion

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5
Q

Where does V1 pass through the skull?

A

Superior Orbital Fissure

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6
Q

Injury to V1 causes what?

A

Anesthesia (loss of pain and touch) in areas of skin of forehead/mucous membranes of scalp d/t inflammation

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7
Q

What branch is V2?

A

Maxillary branch

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8
Q

Function of V2

A

Maxillary brach is somatic sensory: of upper lip, skin over cheek, palate and maxillary sinus

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9
Q

Location of NCB of Maxillary branch V2

A

Trigeminal ganglion

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10
Q

How does V2 pass through skull?

A

Foramen rotundum on sphenoid bone

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11
Q

Loss of pain/touch to the skin over cheek, upper lip or palate?

A

Maxillary branch; V2

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12
Q

Damage to what nerve causes Trigeminal neuraglia or Tic Douloureux = intermittent excructiating pain

A

Maxillary branch V2~ d/t inflammation

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13
Q

What branch is V3?

A

Mandibular: sensory and motor

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14
Q

Function of V3?

A

Somatic Sensory: skin over jaw, and mucosa on anterior 2/3 of tongue
Branchial Motor: chewing and swallowing

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15
Q

Location of NCB of sensory portion of V3

A

Trigeminal ganglion

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16
Q

V3 sensory portion passes through the skull

A

sphenoid bone–foramen ovale

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17
Q

Loss of pain/touch to skin on lower jaw or anterior 2/3 of tongue

A

V3 sensory of Mandibular d/t inflammation

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18
Q

Location of motor NCB of V3

A

Pons- motor nucleus of V

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19
Q

Motor portion of V3 goes through skull:

A

foramen ovale–sphenoid bone

20
Q

What structures are innervated by motor division of V3?

A 
Muscles of mastication: temporalis, lateral and medial pterygoids, masseter
tensor vili palatini
tensor tympani
mylohyoid
Digastric (anterior belly)
21
Q

Muscles of mastication: temporalis, lateral and medial pterygoids

A

V3–motor portion of Mandibular

22
Q

Masseter muscle innervation

A

V3–motor portion of Mandibular

23
Q

Tensor vili Palatini

A

V3–motor portion of mandibular

24
Q

Tensor Tympani

A

V3–motor portion of mandibular

25
Q

Mylohyoid

A

V3–motor portion of mandibular

26
Q

Digastric

A

V3–motor portion of mandibular

27
Q

CC: difficulty chewing is due to damage where?

A

V3 motor portion of mandibular nerve– b/c of inflammation issues

28
Q

Cranial nerve VII

A

Facial nerve

29
Q

CN VII functions

A

Somatic Sensory: skin behind ear, external acoustic meatus and tympanic membrane (external surface)
Special Sensory: taste from anterior 2/3 of tongue and taste from palate
Branchial motor: facial expression

30
Q

Branchial motor: facial expression d/t

A

CN VII

31
Q

Skin behind ear, external acoustic meatus and tympanic membrane

A

CN VII

32
Q

Branchial motor function

A

CN VII

33
Q

Location of NCB of VII Somatic Sensory

A

Genicular ganglion

34
Q

Passage through skull for Somatic Sensory VII

A

Temporal bone: internal acoustic meatus and exits stylomastoid foramen

35
Q

Loss of taste sensation from anterior 2/3 of tongue d/t

A

CN VII deficite to special sensory

–> d/t injury chorda tympani

36
Q

Loss of sensation between skin behind ear, external acoustic meatus, tympanic membrane

A

CN VII deficite to somatic sensory

37
Q

Location of NCB for Special Sensory of VII

A

Geniculate ganglion

38
Q

VII Special Sensory passes through skull

A

Temporal bone: entry– internal acoustic meatus

exits via petrotypmpanic fissure

39
Q

VII Brachial Motor division functions

A

Facial expression

40
Q

Location of NCB of branchial division of VII

A

Pons–Motor nucleus of VII

41
Q

Branchial division of VII passes through skull

A

Temporal bone: enters internal acoustic meatus

exits: stylomastoid foramen

42
Q

What are the 5 terminal branches of Brachial division of Facial nerve VII

A 
Temporal
Zygomatic
Buccal
Mandibular
Cervical
43
Q

Muscles of facial expression

A 
Platysma
buccinator
Frontalis
Occipitalis
Orbicularis Oculi
*Innervated by Branchial motor of VII
44
Q

Stapedius/Stylohyoid/ Digastric (posterior) / facial muscles innervated by:

A

Branchial Motor of VII

45
Q

Symptoms of Bells Palsy

A

Facial muscle paralysis
Can’t close eyes (orbicularis oculi out)
Angle of mouth drops (paralysis of m. around mouth)
Forehead doesn’t wrinkle (due to paralysis of frontalis)
**Only applies to peripheral lesions only bc frontalis m is bilaterally innervated

46
Q

Bells palsy caused by which nerve deficiet?

A

Branchial motor of Facial VII

47
Q

Injury to region of parotid gland causes what type of damage

A

usually distal to stylomastoid foramen– CN VII~ Bell’s Palsy

clinical human anatomy: head and neck (12 decks)

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