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Andrew's cranial nerve flash cards > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

(55 cards)

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1
Q

What is the location of Cranial Nerve 1 (Olfactory)?

A

Location:

  • Doesn’t come from the brainstem
  • It’s an extension from the Diencephalon
  • Olfactory tract runs on the ventral surface of the front lobe then forms the olfactory bulb
  • The nerves are filaments which come away from the olfactory bulb
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2
Q

What is the foramen of Cranial Nerve 1 (Olfactory)?

A

Foramen:

- Little holes in the cribriform plate

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3
Q

What is the function of Cranial Nerve 1 (Olfactory)?

A

Function:

- Smell (Olfaction)

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4
Q

What is a good way to test for a working Olfactory nerve?

A

Test:

- Offer a familiar smelling item (an orange for example)

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5
Q

What is the location of Cranial Nerve 2 (Optic)?

A

Function:

  • Derived from the forebrain
  • Travel from the eyeball to meet (on the most anterior tip of the hypothalamus) to form the optic chiasm
  • They then spread out laterally and form the optic tracts
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6
Q

What is the foramen of Cranial Nerve 2 (Optic)?

A

Foramen:

- The optic canal

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7
Q

What is the function of Cranial Nerve 2 (Optic)?

A

Function:

- Vision

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8
Q

What is a good way to test for a working optic nerve?

A

Test:

- Various visual tests

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9
Q

What is the location of Cranial Nerve 3 (Oculomotor)?

A

Location:

  • Pontomesencephalic junction
  • Between the two cerebral peduncles
  • This is known as the interpeduncular fossa
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10
Q

What is the foramen of Cranial Nerve 3 (Oculomotor)?

A

Foramen:

- Superior Orbital fissure

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11
Q

What is the function of Cranial Nerve 3 (Oculomotor)?

A

Function:

- 4 out of 6 of the optic muscles (not lateral rectus or superior oblique)

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12
Q

What is a good way to test for a working oculomotor nerve?

A

Test:

- Follow finger test

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13
Q

What is the location of Cranial Nerve 4 (Trochlear)?

A

Location:

  • Dorsal of the midbrain
  • Inferior to the inferior colliculi
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14
Q

What is the foramen of Cranial Nerve 4 (Trochlear)?

A

Foramen:

- Superior orbital fissure

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15
Q

What is the function of Cranial Nerve 4 (Trochlear)?

A

Function:

- Superior oblique muscle of the eye

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16
Q

What is a good way to test for a working trochlear nerve?

A

Test:

- Follow finger test

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17
Q

What is the location of Cranial Nerve 5 (Ophthalmic; Maxillary and Mandibular)?

A

Function:

  • The brainstem, just as the pons does, becomes the idle cerebellar peduncle
  • Made of 3 divisions
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18
Q

What is the foramen of The Ophthalmic Nerve?

A

Foramen:

- Superior orbital fissure

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19
Q

What is the foramen of The Maxillary Nerve?

A

Foramen:

- Foramen rotundum

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20
Q

What is the foramen of The Mandibular Nerve?

A

Foramen:

- Foramen Ovale

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21
Q

What is the function of The Ophthalmic Nerve?

A

Function:

  • Sensation from upper portion of the face (skin around the eye)
  • Sensory fibres
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22
Q

What is the function of The Maxillary Nerve?

A

Function:

  • Sensation from middle portion of the face
  • Sensory fibres
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23
Q

What is the function of The Mandibular Nerve?

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A

Function:

  • Sensation from lower portion of the face (mandible)
  • Motor to the muscles of mastication
  • Sensory and motor fibres
24
Q

What is a good way to test for a working Ophthalmic Nerve?

Study These Flashcards
A

Test:

- Cotton wool bud on forehead and corneal reflex test.

25
What is a good way to test for a working Maxillary Nerve?
Test: | - Cotton wool bud on cheek
26
What is a good way to test for a working Mandibular Nerve?
Test: - Cotton wool bud on jaw - Clench teeth and feel for muscle mass - Jaw jerk reflex
27
What is the location of Cranial Nerve 6 (Abducens)?
Location: | - Pontomedullary junction, just adjacent to the basilar artery
28
What is the foramen of Cranial Nerve 6 (Abducens)?
Foramen: | - Superior orbital fissure
29
What is the function of Cranial Nerve 6 (Abducens)?
Function: - Lateral rectus muscle of eye. - Abducts the eye - If the right eye were to be abducted (move laterally) then the left adducted to also look right
30
What is a good way to test for a working Abducens Nerve?
Test: | - Follow finger test
31
What is the location of Cranial Nerve 7 (Facial)?
Location: - Cerebellopontine angle (most medial) - 5 division which supply the muscles of facial expression (smiling)
32
What is the foramen of Cranial Nerve 7 (Facial)?
Foramen: | - Internal acoustic meatus then stylomastoid foramen where it splits into the 5 divisions
33
What is the function of Cranial Nerve 7 (Facial)?
Function: - Muscles of facial expression (smiling) - Taste anterior 2/3rds tongue - Parasympathetic to all glands except parotid
34
What is a good way to test for a working Facial Nerve?
Test: | - Facial Movements
35
What is the location of Cranial Nerve 8 (Vestibocochlear)?
Location: | - Cerebellopontine angle (the middle one)
36
What is the foramen of Cranial Nerve 8 (Vestibocochlear)?
Foramen: | - Internal acoustic meatus
37
What is the function of Cranial Nerve 8 (Vestibocochlear)?
Function: | - Hearing and balance
38
What is a good way to test for a working Vestibocochlear Nerve?
Test: | - Bedside hearing tests (Rinne’s and Weber’s test)
39
What are the 5 divisions of the Facial Nerve?
Divisions: - Temporal - Zygomatic - Buckle - Mandibular - Cervical (from superior to inferior).
40
What is the location of Cranial Nerve 9 (Glossopharyngeal)?
Location: - Posterolateral sulcus of medulla, lateral to olives - Cerebellopontine angle (most lateral)
41
What is the foramen of Cranial Nerve 9 (Glossopharyngeal)?
Foramen: | - Jugular foramen with the internal jugular vein
42
What is the function of Cranial Nerve 9 (Glossopharyngeal)?
Function: - Swallowing - Parasympathetic to parotid - Taste posterior 1/3rd tongue - Cutaneous sensation from ear - Sensation from carotid body
43
What is a good way to test for a working Glossopharyngeal Nerve?
Test: | - Gag reflex
44
What is the location of Cranial Nerve 10 (Vagus)?
Location: | - Posterolateral sulcus of medulla, lateral to olives
45
What is the foramen of Cranial Nerve 10 (Vagus)?
Foramen: | - Jugular foramen with the internal jugular vein
46
What is the function of Cranial Nerve 10 (Vagus)?
Function: - Muscles of pharynx and larynx - Parasympathetic to thoracic and GI tract - Taste from epiglottis and palate
47
What is a good way to test for a working Vagus Nerve?
Test: - Speaking - Movement of uvula
48
What is the location of Cranial Nerve 11 (Accessory)?
Location: | - Caudal medulla and rostral spinal cord
49
What is the foramen of Cranial Nerve 11 (Accessory)?
Foramen: | - Jugular foramen with the internal jugular vein
50
What is the function of Cranial Nerve 11 (Accessory)?
Function: | - Motor to SCM (sternocleidomastoid muscle) and trapezius
51
What is a good way to test for a working Accessory Nerve?
Test: - Shrug shoulder - Rotate head
52
What is the location of Cranial Nerve 12 (Hypoglossal)?
Location: | - Anterolateral sulcus (between pyramid and olives)
53
What is the foramen of Cranial Nerve 12 (Hypoglossal)?
Foramen: | - Hypoglossal canal
54
What is the function of Cranial Nerve 12 (Hypoglossal)?
- Motor to muscles of tongue - If this nerve is damaged then the tongue will point to the side where the nerve is damaged - Both sides are usually pushing together
55
What is a good way to test for a working Hypoglossal Nerve?
- Protrude tongue

Andrew's cranial nerve flash cards (1 decks)

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