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Neuro Anatomie > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

GSA

A

General Somatic Afferent
- General sensation

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2
Q

SSA

A

Special Somatic Afferent
- Hearing, balance, vision

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3
Q

GVA

A

General Visceral Afferent
- general sensation from the Viscera

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4
Q

SVA

A

Special Visceral Afferent
- smell, taste

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5
Q

GSE

A

General Somatic Efferent
- somatic striated muscles

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6
Q

GVE

A

General Visceral Efferent
- Glands and smooth muscle (parasympathetic innervation)

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7
Q

SVE

A

Special Visceral Efferent
- Brachial arch striated muscle

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8
Q

I Olfactory
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • olfactory mucosa
  • Olfactory foramina of the cribriform plate of the ethmoid bone
  • SVA
  • Sensory
  • Nasal Cavity
  • Smell
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9
Q

II Optic
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Retina
  • Optic canal
  • SSA
  • Sensory
  • Photoreceptors
  • Vision
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10
Q

III Oculomotor
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • midbrain (level of superior colliculus)
  • Superior Orbital fissure
  • GSE, GVE
  • Motor
  • Superior, inferior and medial rectus,
    Inferior oblique, Levator palpebrae,
    Sphincter pupillae, Ciliary muscle
  • Eye movement, Raises upper eyelid,
    Pupil constriction, Accommodation
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11
Q

IV Trochlear
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Midbrain (level of inferior colliculus)
  • Superior Orbital fissure
  • GSE
  • Motor
  • Superior oblique muscle
  • depresses and abducts the eyeball
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12
Q

V Trigeminal
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Midbrain, pons, medulla, spinal cord
  • V1: Superior orbital fissure
    V2: Foramen rotundum
    V3 Foramen ovale
  • SVE, GSA
  • Mixed
  • Skin of scalp, Conjunctiva, Ext. ear,
    Skin of jaw, nose, nasal cavity, oralcavity, Muscle of mastication, Tensor timpani, Tensor veli palatini
  • Sensations of touch, pain, temperature, and pressure
    Mastication
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13
Q

VI Abducens
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Pons (level of facial colliculus)
  • Superior Orbital fissure
  • GSE
  • Motor
  • Lateral rectus muscle
  • Turns eyeball laterally
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14
Q

VII Facial
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Pons, lateral to CN VI and superior to CN VIII
  • Internal acoustic meatus
    Stylomastoid foramen
  • SVE, GVE, SVA, GSA
  • both
  • Muscle of facial expression,
    Stapedius, Lacrimal glands, Palatine glands, Ear, Anterior two thirds of the tongue
  • Facial expression, Lacrimation, Secretion
    Taste, Touch, pain, temperature from ear
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15
Q

VIII Vestibulocochlear
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Pontomedullary junction
  • Internal acoustic meatus
  • SSA
  • sensory
  • Vestibule, Semi-circular canals, cochlea
  • Balance, Static equilibrium, Dynamic equilibrium, Hearing
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16
Q

IX Glossopharyngeal
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • medulla
  • Jugular foramen
  • SVE, GVA, GSA, GVE, SVA
  • Both
  • Stylopharyngeus, Pharynx, Soft palate, Tonsils, Tongue, Ear, Parotid gland, Carotid branch
  • Elevates pharynx, Touch, pain, and temperature (ear, pharynx, soft palate, tongue, tonsils), Taste post. third of
    tongue, Sense PO2, PCO2, pH, and BP from carotid branch
17
Q

X Vagus
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Medulla
  • Jugular foramen
  • GVE, SVA, GSA, SVE, GVE
  • Both
  • Pharynx, Larynx, Thoracic viscera, Abdominal viscera, Epiglottis, Ear, Soft palate, Aortic arch
  • Main parasympathetic nerve (90%)
18
Q

XI Accessory
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Medulla (cranial component) Cervical spinal cord (spinal
    component)
  • Jugular foramen (cranial component)
    Foramen magnum (spinal component)
  • GSE, SVE
  • Motor
  • Sternocleidomastoid, Trapezius,
    Some of the vagal components (travels with CN X)
  • Elevates and retracts scapula,
    Flexion of neck, Contralateral head rotation
19
Q

XII Hypoglossal
Origin
Cranial Opening
Fiber Components
Nerve Type
Structures supplied
Function

A
  • Medulla
  • Hypoglossal canal
  • GSE
  • Motor
  • Extrinsic and intrinsic muscles of the tongue
  • Shape of tongue, Protracts, retracts, elevate, and depress tongue

Neuro Anatomie (11 decks)

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