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Neural Processes > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

The cranial nerves emerge

A
  • directly from cerebrum & brainstem (above level of 1st vertebrae)
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2
Q

the function of cranial nerves

A

relay information between brain and parts of body – senses of vision, smell, taste, hearing

(primarily to/from the head & neck)

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3
Q

How many C.N originate in brainstem?

A

10

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4
Q

How many C.N originate in cerebrum

A

2 (olfactory & optic)

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5
Q

Cranial nerve names

A

I Olfactory
II Optic
III Oculomotor
IV Trochlear
V Trigeminal
VI Abducens
VII Facial
VIII Vestibulocochlear
IX Glossopharyngeal
X Vegas
XI Accessory (spinal)
XII Hypoglossal

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6
Q

these nerves are ..

A

sensory (3)
motor (5)
both (4)

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7
Q

Seven fiber types

A

GSE, GSA, GVA, GSA
Special Somatic Afferent (SSA)
Special Visceral Efferent (SVE)
Special Visceral Afferent (SVA)

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8
Q

Trigeminal Nerve (V)

A

Origin: pons

Function: touch, pain, temp, vibration for face, mouth & anterior 2/3 tongue

Motor and Sensory (both)

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9
Q

Facial Nerve (VII)

A

Origin: pons

Function: Muscles of face, sensation near ears, taste in anterior 2/3 of tongue, salivary glands

Motor and Sensory (both)

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10
Q

origin of trigeminal nerve

A

pons

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11
Q

origin of facial nerve

A

pons

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12
Q

function of trigeminal nerve

A
  • touch
  • pain
  • temp
  • vibration
    ^ for face, mouth & anterior 2/3 tongue
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13
Q

function of facial nerve

A
  • Muscles of face
  • sensation near ears
  • taste in anterior 2/3 of tongue
  • salivary glands
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14
Q

fiber type of trigeminal

A

both

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15
Q

fiber type of facial

A

both

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16
Q

There are __ branches for facial nerve

A

5

Wide area of function for the facial nerve

17
Q

Vestibulocochlear Nerve (VIII)

A

AKA Auditory nerve (balance ear)

Origin: pons/medulla junction

Function: hearing and balance

sensory fiber type

18
Q

origin of Vestibulocochlear nerve

A

pons/medulla junction

19
Q

function of Vestibulocochlear nerve

A

hearing and balance

20
Q

fiber type of Vestibulocochlear

A

sensory

21
Q

Glossopharyngeal Nerve (IX)

A

Origin: pons/medulla junction

Function: pharyngeal movement, parotid gland (salivation), middle ear, pharynx, posterior 1/3 of tongue, taste on posterior 1/3 of tongue

both

22
Q

origin of Glossopharyngeal Nerve

A

pons/medulla junction

23
Q

function of Glossopharyngeal Nerve

A

pharyngeal movement
parotid gland (salivation)
middle ear, pharynx, post 1/3 of tongue
taste on posterior 1/3 of tongue

24
Q

fiber type of Glossopharyngeal

A

both

25
Q

Vagus Nerve (X)

A

aka the Wanderer

Origin: medulla

Function: pharyngeal and laryngeal muscles, heart/lungs/digestive tract, tactile sensation to external ear canal, pain from mucous membranes, taste from epiglottis & pharynx

both

26
Q

origin of vagus

A

medulla

27
Q

function of vagus

A

pharyngeal and laryngeal muscles

heart/lungs/digestive tract

tactile sensation to external ear canal

pain from mucous membranes

taste from epiglottis & pharynx

28
Q

fiber type of vagus

A

both

29
Q

Hypoglossal Nerve (XII)

A

origin: medulla

function: muscles of tongue

motor

30
Q

origin of Hypoglossal nerve

A

medulla

31
Q

function of Hypoglossal nerve

A

muscles of tongue

32
Q

fiber type of Hypoglossal

A

motor

33
Q

Muscles of larynx/pharynx

A

Vagus nerve (X) innervates the striated muscles of L/P with the exceptions of

  • stylopharyngeous muscle (CN IX)
  • tensor veli palatini (CN V)
34
Q

Muscles of tongue

A

Hypoglossal (XII) nerve innervates all intrinsic/extrinsic lingual muscles with the exception of

  • palatoglossus muscle (innervated by Vagus)
35
Q

Palatoglossus muscle function…

A
  • elevate posterior portion of the tongue
  • draw soft palate inferiority
36
Q

Cranial nerves in speaking

A

V, VII, X, XI, XII

37
Q

Cranial nerves in hearing

A

V, VII, VIII

38
Q

Cranial nerves in voice

A

V, VII, X, XII

39
Q

Cranial nerves in swallowing

A

V, VII, IX, X, XI, XII

Neural Processes (9 decks)

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