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Nervous System > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

Where does CN1 arise?

A

From the receptors in the olfactory epithelium

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2
Q

Where does CN2 arise?

A

Bipolar cells of the retina

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3
Q

Where does CN3 arise?

A

Midbrain

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4
Q

Where does CN4 arise?

A

Dorsal Surface of midbrain

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5
Q

Where does CN5 arise?

A

Pons

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6
Q

Where does CN6 arise?

A

Ponto-medullary jx

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7
Q

Where does CN7 arise?

A

Ponto-medullary jx

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8
Q

Where does CN8 arise?

A

Ponto-medullary jx

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9
Q

Where does CN9 arise?

A

Medulla

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10
Q

Where does CN10 arise?

A

Medulla

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11
Q

Where does CN11 arise?

A

?Brain or Medulla

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12
Q

Where does CN12 arise?

A

Medulla

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13
Q

What are the components of CrN1?

A

Sensory - smell

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14
Q

What are the components of CrN2?

A

Sensory - vision

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15
Q

What are the components of CrN3?

A

Somatic motor - EOM and eyelids

Visceral Motor - Parasymp = constriction of pupils, accomodation of ciliary

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16
Q

What are the components of CrN4?

A

Somatic motor - SOblique

17
Q

What are the components of CrN5?

A

CrNV1 = general sensory- cornea, scalp, forehead, eyelids, nose and mucosa of nasal cavity
CrNV2 = General Sensory from face over maxilla, maxillary teeth, TMJ, max sinus and plate
CrNV3 - General Sensory from face over mandible, mandibular teeth, TMJ, mouth mucosa
Special sensory - anterior 2/3 of tongue [lingual nerve], Somatic Motor - Muscles of mastication, parts of diagstric, tensor veli palatinin and tensor tympani

18
Q

What are the components of CrN6?

A

somatic motor - Extraocular muscle (lateral rectus abducts the eye)

19
Q

What are the components of CrN7?

A

Somatic motor - muscles of facial expression & scalp, stapedius of middle ear, part of digastric muscle

Visceral motor - parasympathetic innervation of submandibular & sublingual salivary glands, lacrimal glands, glands of nose & palate

Special sensory - taste from anterior 2/3rd of tongue & soft palate
general sensory - from external acoustic meatus

20
Q

What are the components of CrN8?

A

special sensory - vestibular sensation from semicircular ducts, utricle, saccule gives sense of position & movement - hearing from spiral organ

21
Q

What are the components of CrN9?

A

special sensory - taste from posterior 1/3rd of tongue
general sensory - cutaneous sensations from middle ear and posterior oral cavity
visceral sensory - sensation from carotid body & carotid sinus
visceral motor - parasympathetic innervation of parotid gland
somatic motor - to stylopharyngeus, helps with swallowing

22
Q

What are the components of CrN10?

A

special sensory - taste from epiglottis and palate
general sensory - sensation from auricle, external acoustic meatus
visceral sensory - from pharnyx, larynx, trachea, bronchi, heart, oesophagus, stomach, intestine
visceral motor - parasympathetic innervation muscle in bronchi, gut, heart
somatic motor - to pharynx, larynx, palate & oesophagus, pallatoglossus

23
Q

What are the components of CrN11?

A

somatic motor - striated muscle of soft palate, pharynx & larynx, and to sternocleidomastoid & trapezius

24
Q

What are the components of CrN12?

A

somatic motor - to muscles of tongue except the palatoglossus

Nervous System (6 decks)

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