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Gross Anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

II

A

Optic nerve

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2
Q

III

A

Oculomotor nerve

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3
Q

IV

A

Trochlear nerve

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4
Q

V

A

Trigeminal nerve

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5
Q

VI

A

Abducens nerve

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6
Q

VII

A

Facial nerve

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7
Q

VIII

A

Vestibulocochlear nerve

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8
Q

IX

A

Glossopharyngeal nerve

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9
Q

X

A

Vagus nerve

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10
Q

XI

A

Spinal Accessory nerve

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11
Q

XII

A

Hypoglossal nerve

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12
Q

Cribriform plate

A

CN I: Olfactory

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13
Q

Optic canal

A

CN II: Optic

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14
Q

Orbital fissure

A

CN III: Oculomotor

CN IV: Trochlear

Ophthalmic branch of CN V: Trigeminal

CN VI: Abducens

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15
Q

Round foramen and rostral alar foramen

A

Maxillary branch of CN V: Trigeminal

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16
Q

Oval foramen

A

Mandibular branch of CN V: Trigeminal

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17
Q

Stylomastoid foramen and internal acoustic meatus

A

CN VII: Facial

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18
Q

Internal acoustic meatus

A

CN VIII: Vestibulocochlear

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19
Q

Jugular foramen and tympanoccipital fissure

A

CN IX: Glossopharyngeal

CN X: Vagus

CN XI: Spinal Accessory

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20
Q

I

A

Olfactory nerve

21
Q

Hypoglossal canal

A

CN XII: Hypoglossal

22
Q

Tests for: Olfaction (smell test). Cotton ball with alcohol (not something so strong it stimulates CN V by irritating the nasal mucosa)

A

CN I: Olfactory

23
Q

Tests for: menace response, obstacle course, quietly roll ball across visual field, also pupillary light reflex, and tracking response.

A

CN II: Optic

  • II (afferent) in VII (efferent) out in for menace response
  • II in III out for pupillary light reflex
24
Q

Test for: dorsal, ventral or medial movement of the pupil (DVM), look for lateral strabismus in lesioned animal, droopy upper eyelid, pupillary light reflex, including the indirect response to light in the contralateral eye

A

CN III: Oculomotor

-II in III out for pupillary light reflex

25
Q

Tests for: oblique deviation of pupil in lesioned animal

A

CN IV: Trochlear

-not obvious in species with round pupils

26
Q

Tests for: palpebral reflex, medial canthus

A

Ophthalmic branch of CN V

-V in VII out

27
Q

Tests for: palpebral reflex, lateral canthus; sensation to upper lip or nasal mucosa

A

Maxillary branch of CN V

28
Q

Tests for: sensation to lower lip/jaw or auriculotemporal area, or look for neurogenic atrophy to muscles of mastication

A

Mandibular branch of CN V

29
Q

Tests for: lateral movement of the eye in the head (tracking), look for medial strabismus in a lesioned animal

A

CN VI: Abducens

30
Q

Test for: palpebral reflex-failure to close the palpebral fissure in lesioned animal. Effects seen on muscles of facial expression. Look for deviation of philtrum, droopy ear.

A

CN VII: Facial

31
Q

Test for: hearing, vestibular signs (nystagmus, head tilt, circling, balance problems)

A

CN VIII: Vestibulocochlear

32
Q

Test for: gag reflex, swallowing

A

CN IX: Glossopharyngeal

33
Q

Test for: gag reflex, and listen to heart and gut sounds (increase heart, decrease gut with lesion)

A

CN X: Vagus

34
Q

Test for: neurogenic atrophy of neck muscles in lesioned animal

A

CN XI: Spinal Accessory

35
Q

Test for: tongue tone, tongue neurogenic atrophy

A

CN XII: Hypoglossal

36
Q

Motor to extrinsic and intrinsic muscles of the tongue

A

CN XII

37
Q

Motor to trapezius, omotransversarius, sternocephalicus and cleidocephalicus. Also motor to larynx via recurrent laryngeal nerve.

A

CN XI

38
Q

Some motor to larynx, pharynx and esophagus.
Sensory to ear canal and epiglottis.
Parasympathetic to heart, lungs, and abdomen.

A

CN X

39
Q

Sensory for hearing and balance

A

CN VIII

40
Q

Sensory to caudal 1/3 of tongue (taste) and pharyngeal mucosa (touch).
Motor to the pharynx.
Parasympathetic to parotid and mucosal glands.

A

CN IX

41
Q

Motor to muscles of facial expression.
Sensory to rostral 2/3 of tongue (taste).
Parasympathetic to salivary and lacrimal glands.

A

CN VII

42
Q

Motor to retractor bulbi muscles and lateral rectus muscle.

A

CN VI

43
Q

Sensory from lower jaw, rostral 2/3 of tongue (taste and touch), and auriculotemporal area.
Motor to muscles of mastication.

A

Mandibular branch of CN V

44
Q

Sensory from upper lip, nasal mucosa, lateral aspect of palpebrae.

A

Maxillary branch of CN V

45
Q

Sensory from globe, periorbita, nasal mucosa, medial aspect of palpebrae.

A

Ophthalmic branch of CN V

46
Q

Motor to dorsal oblique muscle

A

CN IV

47
Q

Motor to DVM rectus muscles, ventral oblique muscle, and levator palpebrae superioris muscle.
Parasympathetic to ciliary ganglia (iris sphincter)

A

CN III

48
Q

Sensory from retina (vision)

A

CN II

49
Q

Sensory from olfactory epithelium (smell)

A

CN I

Gross Anatomy (5 decks)

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