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Cranial Nerves Flashcards

1
Q

CN 1

  • Name
  • Origin
  • Foramen
  • Function
A
  • Olfactory
  • Olfactory epithelium
  • Cribriform plate
  • Olfaction
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2
Q

CN 2

  • Name
  • Origin
  • Foramen
  • Function
A
  • Optic
  • Retinal epithelium
  • Optic canal
  • Vision (& sensory part of the accomodation reflex)
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3
Q

Draw & label the passage of CN 2 & the Accomodation reflex

A
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4
Q

CN 3

  • Name
  • Origin
  • Foramen
  • Function
A
  • Oculomotor
  • Midbrain
  • SOF
  • Functions
    • Motor - S, I, M Rectus & I Oblique [eye movement]
    • Motor - Levator palpebreae superioris [eyelid movement]
    • Parasympathetic [‘motor part’ from Edinger-Westphal nucleus to ciliary ganglion]
      • Accomodation reflex [pupil constriction]
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5
Q

Draw & label the Corneal reflex

A
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6
Q

CN 4

  • Name
  • Origin
  • Foramen
  • Function
A
  • Trochlear
  • Midbrain - dorsal aspect :O
  • SOF
  • Superior oblique (in&down)
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7
Q

CN 5

  • Name
  • Origin
  • Foramen
  • Function
A
  • Trigeminal
  • Pons
  • Foramen
    • 1 [Opthalmic] - SOF
    • 2 [Maxillary] - Rotundum
    • 3 [Mandibular] - Ovale
  • Function
    • 1,2,3 Sensory - face, scalp, cornea
    • 3 [Mandibular] Motor - Mastication (& tensor tympani - ear)
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8
Q

CN 6

  • Name
  • Origin
  • Foramen
  • Function
A
  • Abducens
  • Pons
  • SOF
  • Motor - Lateral rectus (eye out)
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9
Q

CN 7

  • Name
  • Origin
  • Foramen
  • Function
A
  • Facial
  • Pons
  • IAM
  • Function
    • Motor - facial expression (& stapedius muscle)
    • Sensory - ant 2/3 tongue
    • Parasympathetic - lacrimal & salivary glands

Branches (To Zanzibar By Motor Car)

  • Temporal - frontalis, obicularis oculi, corrugator supercilii
  • Zygomatic - orbicularic oculi
  • Buccal - orbicularis oris, buccinator, zygomaticus
  • Marginal mandibular - mentalis
  • Cervical - platysma
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10
Q

Draw & label the passage of CN 7 from its nuclei

A
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11
Q

Draw & label CN 7’s passage from the cortex to the face - representing UMN & LMN lesions

A
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12
Q

CN 8

  • Name
  • Origin
  • Foramen
  • Function
A
  • Vestibulocochlear
  • Pons
  • IAM
  • Sensory
    • Vestibular nerve to Vestibular apparatus
    • Cochlear nerve to Cochlear
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13
Q

CN 9

  • Name
  • Origin
  • Foramen
  • Function
A
  • Glossopharyngeal
  • Medulla
  • Jugular foramen
  • Function
    • Sensory
      • Post 1/3 tongue,
      • Pharynx
      • Carotid body & sinus
      • Middle ear, eustachian tube
    • Motor
      • Stylopharangeus muscle [swallowing]
    • Parasympathetic
      • Parotid salivary gland
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14
Q

CN 10

  • Name
  • Origin
  • Foramen
  • Function
A
  • Vagus
  • Medulla
  • Jugular foramen
  • Functions
    • Sensory
      • Pharynx, larynx, oesophagus
      • Aortic body & arch
      • Viscera
    • Motor
      • Pharynx, larynx, upper oesophagus, soft palate
    • Parasympathetic
      • Viscera
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15
Q

CN 11

  • Name
  • Origin
  • Foramen
  • Function
A
  • Accessory
  • Medulla
  • Jugular Foramen
  • Motor - Sternomastoid & trapezius muscle
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16
Q

CN 12

  • Name
  • Origin
  • Foramen
  • Function
A
  • Hypoglossal
  • Medulla
  • Hyglossal canal
  • Motor - intrinsic & extrinsic of the tongue
17
Q

Outline the foramina the CN pass through

A

Cleaners Only Spray Smelly Stuff Right On Smelly Idiots In JJJ’s house

  1. Cribriform plate
  2. Optic canal
  3. SOF
  4. SOF
  5. [Trigeminal]
    1. SOF
    2. Rotundum
    3. Ovale
  6. SOF
  7. IAM
  8. IAM
  9. Jugular foramen
  10. Jugular foramen
  11. Jugular foramen
  12. Hypoglossal canel
18
Q

Outline the origin of the CNs

A

O. R. 2M’s 4P’s 4M’s

  1. Olfactory epithelium
  2. Retinal epithelium
  3. Midbrain
  4. Midbrain
  5. Pons
  6. Pons
  7. Pons
  8. Pons
  9. Medulla
  10. Medulla
  11. Medulla
  12. Medulla

Question: Or 244

19
Q

Where do first-order neurones of CN 1 synape?

A

Olfactory bulb

20
Q

What bone is the optic canal in?

A

Medial cranial fossa - Sphenoid bone

21
Q

Where do 2nd order neurones of CN 2 synapse?

A

1st order - Lateral geniculate nucleus

2nd order - Optic radiation to visual cortex (and fibers going to the Pretectal nucleus for the accomodation reflex)

22
Q

What is the union of CN 2 nerves called?

In which bony feature can it be found?

A

Optic chiasm

Chiasmatic groove in Sphenoid bone

23
Q

Where do the parasympathetic motor fibres of CN 3 originate & where do they synapse?

A

Originate in Edinger-Westphal nucleus

Synapse in Ciliary ganglion

Neurones then innervate the Sphincter pupillae

24
Q

What is unique about CN 4’s origin?

A

Exits posteriorly from brainstem!

25
Q

What is the function of the Recurrent laryngeal nerve

Where does it originate from

What is its route

A

Supplies the intrinsic muscles of the larynx

Originate from the Vagu

Branches at the level of the aorta & hooks round and back up [recurrent]

26
Q

Where do the cranial & spinal rootlets of the Accessory nerve arrise?

A

Cranial component from the Medulla

Spinal rootlets come from the C5

27
Q

What are the extrinsic muscles of the tongue?

A

Name-glossus

  • Genio
  • Hyo
  • Stylo
  • Palato

Finals Neurology (40 decks)

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