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A215 - block three > cranial nerves > Flashcards

cranial nerves Flashcards

1
Q
  • part of the PNS (connect to brain)
  • 12 pairs
  • roman numerals
  • 3 sensory
  • 5 motor
  • 4 mixed
  • 4 automatic - parasympathetic functions (smooth muscle, cardiac muscle, glands) (III, VII, IX, X)
A

description of cranial nerves

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2
Q

olfactory (I), optic (II), vestibulocochlear (VIII)

A

sensory cranial nerves

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3
Q

through cribriform plate of ethmoid

  • one of the few places neurons can regenerate
A

olfactory (CN I) location

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4
Q

smell

A

olfactory (CN I) function

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5
Q

posterior from eyeball to optic chiasm

A

optic (CN II) location

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6
Q

sight

A

optic (CN II) function

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7
Q

petrous part of temporal bone to junction of pons/medulla

A

vestibulocochlear (CN VIII) location

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8
Q

hearing and balance

A

vestibulocochlear (CN VIII) function

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9
Q

oculomotor (III), trochlear (IV), abducens (VI), accessory (XI), hypoglossal (XII)

A

motor cranial nerves

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10
Q

junction of midbrain/pons into posterior orbit

A

oculomotor (CN III) location

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11
Q

voluntary

  • 4 external ocular muscles (superior rectus, inferior rectus, medial rectus, inferior oblique)
A

oculomotor (CN III) somatic motor function

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12
Q

involuntary

  • constrict the pupil
  • accommodation (lens adjustment)
A

oculomotor (CN III) autonomic motor function

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13
Q

lateral pons into orbit

A

trochlear (CN IV) location

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14
Q

innervates superior oblique

A

trochlear (CN IV) function

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15
Q

junction of pons/medulla into orbit

A

abducens (CN VI) location

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16
Q

innervates lateral rectus

A

abducens (CN VI) function

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17
Q

lateral medulla/spinal cord into posterior/lateral neck

A

accessory (CN XI) location

18
Q

innervates trapezius and sternocleidomastoid

A

accessory (CN XI) function

19
Q

medulla to tongue

A

hypoglossal (CN XII) location

20
Q

innervates intrinsic and extrinsic tongue muscles

A

hypoglossal (CN XII) function

21
Q

stick tongue out; tip will deviate towards the side that is not working

  • can be caused by tumor/stroke
A

hypoglossal nerve test

22
Q

trigeminal (V), facial (VII), glossopharyngeal (IX), vagus (X)

A

mixed (sensory and motor) cranial nerves

23
Q

lateral pons

A

trigeminal (CN V) location

24
Q

opthalmic (V1), maxillary (V2), mandibular (V3)

A

divisions of trigeminal nerve

25
Q

sensory to upper face

A

opthalmic (V1)

26
Q

sensory to mid face

A

maxillary (V2)

27
Q

lower face including anterior tongue

A

mandibular (V3) sensory

28
Q
  • muscles of mastication
  • temporalis
  • masseter
  • medial and lateral pterygoids
A

mandibular (V3) motor

29
Q

junction of pons/medulla through parotid gland to face

A

facial (CN VII) location

30
Q

taste from anterior 2/3 of tongue

A

facial (CN VII) sensory

31
Q

muscles of facial expression, digastric, and stylohyoid

A

facial (CN VII) somatic motor

32
Q

increases secretion from lacrimal gland of eye, submandibular and sublingual salivary glands

A

facial (CN VII) autonomic motor

33
Q

lateral medulla to pharynx/neck

A

glossopharyngeal (CN IX) location

34
Q
  • general sensory and taste to 1/3 of tongue
  • general sensory to part of pharynx
  • visceral sensory from carotid bodies
A

glossopharyngeal (CN IX) sensory

35
Q

one pharyngeal muscle (stylopharyngeus)

A

glossopharyngeal (CN IX) somatic motor

36
Q

increases secretion from parotid salivary gland

A

glossopharyngeal (CN IX) autonomic motor

37
Q

lateral medulla then travels all over (pharynx, larynx, throat, etc.)

A

vagus (CN X) location

38
Q
  • visceral sensory info from heart, lungs, most abdominal organs
  • general sensory info. from external acoustic meatus, tympanic membrane, part of pharynx, laryngopharynx, and larynx
A

vagus (CN X) sensory

39
Q

most pharyngeal muscles; laryngeal muscles

A

vagus (CN X) somatic motor

40
Q

innervates smooth muscle and glands of heart, lungs, larynx, trachea, most abdominal muscles

A

vagus (CN X) autonomic motor

41
Q

a reflex involves a sensory component (to detect the stimulus) and a motor component (to cause the response)

  • sensory component : glossopharyngeal
  • motor component : vagus
A

gag reflex

A215 - block three (11 decks)

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