Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Neuroanatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What is the function of CNI?

A

Special sensory (smell)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the function of CNII?

A

Special sensory (vision)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the function of CNIII?

A

Motor (eye movement)

Parasympathetic (pupil constriction)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the function of CNIV?

A

Motor (superior oblique)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the function of CNV1?

A

Sensory

  • upper eyelid
  • cornea
  • conjunctiva
  • skin of tip of nose
  • bones and soft tissue of orbit
  • upper anterior nasal cavity
  • paranasal sinuses
  • cranial fossa
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the function of CNV2?

A

Sensory

  • skin of lower eyelid
  • over maxilla
  • skin and mucosa of upper lip
  • lower posterior nasal cavity
  • maxilla and maxillary teeth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the function of CNV3?

A

Sensory

  • skin over mandible and TMJ
  • middle cranial fossa
  • mandible
  • anterior 2/3rd of tongue
  • floor of mouth
  • buccal mucosa
  • mandibular teeth

Motor

  • masseter
  • temporalis
  • medial pterygoid
  • lateral pterygoid
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is the function of CNVI?

A

Motor (lateral rectus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the function of CNVII?

A

Special sensory (taste to anterior 2/3rd tongue via chorda tympani)

Motor (stapedius)

Parasympathetic (submandibular and sublingual glands)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the function of CNVIII?

A

Special sensory (hearing and balance)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the function of CNIX?

A

Special sensory (taste to vallate papillae - posterior 1/3rd of tongue)

Sensory (pharyngeal mucosa, palatine tonsil, Eustachian tube, middle ear cavity)

Motor (stylopharyngeus)

Visceral afferent (carotid sinus baroreceptors and carotid body chemoreceptors)

Parasympathetic (parotid gland)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the function of CNX?

A

Sensory
Motor
Visceral Afferent
Parasympathetic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the function of CNXI?

A

Motor (SCM and trapezius)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the function of CNXII?

A

Motor (muscles of tongue - genioglossus, hyoglossus, styloglossus - except palatoglossus)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Describe the extracranial part of CNI

A

Olfactory mucosa in nasal cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe the extracranial part of CNII

A

Retinal neurones travel posteriorly (via optic nerve) through the orbit

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Describe the extracranial part of CNIII

A

Extraoccular muscles

Parasympathetics synapse in ciliary ganglion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Describe the extracranial part of CNIV

A

Superior oblique

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Describe the extracranial part of CNV1

A

Superficial and deep structures of face towards cranial foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Describe the extracranial part of CNV2

A

Superficial and deep structures of face towards cranial foramen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Describe the extracranial part of CNV3

A

Sensory - from superficial and deep structures of the face towards cranial foramen

Motor - from foramen ovale to skeletal muscle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Describe the extracranial part of CNVI

A

Lateral rectus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Describe the extracranial part of CNVII

A

Somatic motor axons pass into parotid gland then branch into 5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the 5 branches of facial nerve?

A 
Temporal 
Zygomatic
Buccal
Mandibular
Cervical
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Describe the extracranial part of CNVIII

A

From cochlear and vestibular apparatus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Describe the extracranial part of CNIX

A

Descends to pharynx and mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Describe the extracranial part of CNX

A

Supplies structures between palate and midgut

Runs within carotid sheath

Left recurrent laryngeal - under arch of aorta

Right recurrent laryngeal - under right subclavian artery

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Describe the extracranial part of CNXI

A

Axons supply SCM on deep surface

Then continue across posterior triangle to supply trapezius

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Describe the extracranial part of CNXII

A

Descends lateral to carotid sheath

Turns anteriorly at level of hyoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

What is the cranial foramina of CNI?

A

Cribiform plate of ethmoid bone in anterior cranial fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

What is the cranial foramina of CNII?

A

Optic canal in middle cranial fossa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What is the cranial foramina of CNIII?

A

Superior orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the cranial foramina of CNIV?

A

Superior orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What is the cranial foramina of CNV1?

A

Superior orbital fissure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What is the cranial foramina of CNV2?

A

Foramen rotundum

36
Q

What is the cranial foramina of CNV3?

A

Foramen ovale

37
Q

What is the cranial foramina of CNVI?

A

Superior orbital fissure

38
Q

What is the cranial foramina of CNVII?

A

Petrous part of temporal bone

In via internal acoustic meatus

Out via stylomastoid foramen

39
Q

What is the cranial foramina of CNVII?

A

Internal acoustic meatus in posterior cranial fossa

40
Q

What is the cranial foramina of CNIX?

A

Jugular foramen

41
Q

What is the cranial foramina of CNX?

A

Jugular foramen

42
Q

What is the cranial foramina of CNXI?

A

Jugular foramen in posterior cranial fossa

43
Q

What is the cranial foramina of CNXII?

A

Hypoglossal canal in posterior cranial fossa

44
Q

Describe the intracranial part of CNI

A

Nerves synapse in olfactory bulb

45
Q

Describe the intracranial part of CNII

A

Optic chiasm forms the optic tract

46
Q

Describe the intracranial part of CNIII

A

Travels to orbit in lateral wall of cavernous sinus

47
Q

Describe the intracranial part of CNIV

A

Travels to orbit in lateral wall of cavernous sinus

48
Q

Describe the intracranial part of CNV1

A

Inferior to edge of tentorium cerebelli between posterior and middle cranial fossae

49
Q

Describe the intracranial part of CNV2

A

Inferior to edge of tentorium cerebelli between posterior and middle cranial fossae

50
Q

Describe the intracranial part of CNV3

A

Inferior to edge of tentorium cerebelli between posterior and middle cranial fossae

51
Q

Describe the intracranial part of CNVI

A

Travels to orbit within the cavernous sinus

52
Q

Describe the intracranial part of CNVII

A

Directly into internal acoustic meatus in the posterior cranial fossa

53
Q

Describe the intracranial part of CNVIII

A

Travels posteriomedially from internal acoustic meatus to the pontomedullary junction

54
Q

Describe the intracranial part of CNIX

A

Directly towards jugular foramen in posterior cranial fossa

55
Q

Describe the intracranial part of CNX

A

Directly towards jugular foramen in the posterior cranial fossa

56
Q

Describe the intracranial part of CNXI

A

Ascends through foramen magnum then travels towards the jugular foramen

57
Q

Describe the intracranial part of CNXII

A

Anteriorly to hypoglossal canal

58
Q

What is the CNS connection of CNI?

A

Pass through olfactory tract to cortical areas

59
Q

What is the CNS connection of CNII?

A

Diencephalon (thalamus and hypothalamus)

60
Q

What is the CNS connection of CNIII?

A

Mesencephalon (midbrain)

61
Q

What is the CNS connection of CNIV?

A

Mesencephalon (midbrain)

62
Q

What is the CNS connection of CNV1?

63
Q

What is the CNS connection of CNV2?

64
Q

What is the CNS connection of CNV3?

65
Q

What is the CNS connection of CNVI?

A

Pontomedullary junction

66
Q

What is the CNS connection of CNVII?

A

Anterolateral at pontomedullary junction

67
Q

What is the CNS connection of CNVIII?

A

Pontomedullary junction

68
Q

What is the CNS connection of CNIX?

A

Lateral aspect of superior medulla oblongata

69
Q

What is the CNS connection of CNX?

A

Lateral aspect of medulla oblongata (inferior to CNIX)

70
Q

What is the CNS connection of CNXI?

A

Cervical spinal cord

71
Q

What is the CNS connection of CNXII?

A

Via many rootlets lateral to the pyramids of the medulla oblongata

72
Q

How do you test for CNI?

A

Ask patient to smell something

73
Q

How do you test for CNII?

A
  1. Acuity - Snellen
  2. Colour - Ishihara plates
  3. Fields - 4 quadrants
  4. Reflexes - corneal and pupillary light
  5. Fundoscopy
74
Q

How do you test for CNIII?

A

Use light to check for pupillary constriction

75
Q

How do you test for CNIV?

76
Q

How do you test for CNV1?

A

Patient closes eyes, gently brush skin of forehead, upper eyelid and tip of nose

77
Q

How do you test for CNV2?

A

Patient closes eyes, gently brush mid-cheek, lower eyelid, upper lip and nostril of nose

78
Q

How do you test for CNV3?

A

Sensory -
Patient closes eyes, gently brush mid-cheek, lower lip and chin
Motor -
palpate strength of contraction of masseter and temporalis by getting patient to clench their teeth. Also ask patient to open their jaw against resistance

79
Q

How do you test for CNVI?

80
Q

How do you test for CNVII?

A

Ask patient to:

  1. Raise eyebrows (frontalis)
  2. Close eyes tightly (orbicularis oculi)
  3. Smile (lip elevators)
  4. Puff out cheeks and hold air (orbicularis oris)
81
Q

How do you test for CNVIII?

A

Rinne and Weber tests

82
Q

How do you test for CNIX?

A

Gag reflex

83
Q

How do you test for CNX?

A 
Patient says ah (motor function of uvula)
Patient swallows (pharyngeal muscles)
Listen to speech (laryngeal muscles)
84
Q

How do you test for CNXI?

A

Patient shrugs shoulders then turns head to flex neck (both sides)

85
Q

How do you test for CNXII?

A

Patient sticks out tongue

Neuroanatomy (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions