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Anatomy Unit 2 > Cranial Nerves Pt. 1 > Flashcards

Cranial Nerves Pt. 1 Flashcards

1
Q

Cranial Nerve I

A

Olfactory Nerve

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2
Q

Cranial Nerve II

A

Optic Nerve

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3
Q

Cranial Nerve III

A

Oculomotor Nerve

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4
Q

Cranial Nerve IV

A

Trochlear Nerve

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5
Q

Cranial Nerve V

A

Trigeminal Nerve

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6
Q

Cranial Nerve VI

A

Abducens Nerve

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7
Q

Cranial Nerve VII

A

Facial Nerve

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8
Q

Cranial Nerve VIII

A

Vestibulocochlear Nerve

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9
Q

Cranial Nerve IX

A

Glossopharyngeal Nerve

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10
Q

Cranial Nerve X

A

Vagus Nerve

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11
Q

Cranial Nerve XI

A

Spinal Accessory Nerve

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12
Q

Cranial Nerve XII

A

Hypoglossal Nerve

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13
Q

Originates: Interior Frontal Lobe
Exits: Cribriform Plate

A

Olfactory Nerve (CN I)

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14
Q

Branch of CN I:
-Supplies temporal lobe and primary olfactory area (Piriform Cortex)

A

Lateral Striae

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15
Q

Branch of CN I:
-Supplies the para-olfactory area and connects to the Limbic System.
-Also has other fibers that project to the Anterior Commissure and cross over to the Olfactory area on the other side of the brain

A

Medial Striae

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16
Q

Primary Olfactory area, made up on the Uncus and the Rostral end of the parahippocampus.

A

Piriform Cortex

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17
Q

Which is the only sensory nerve that does not go through the Thalamus?

A

Olfactory Nerve (CN I)

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18
Q

Olfactory Fascicles -> Cribriform Plate -> cranial cavity -> olfactory bulb -> olfactory tract -> olfactory trigone -> Medial and Lateral striae

A

Olfactory Nerve (CN I)

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19
Q

Usually take something with a strong odor (ammonia), if they withdraw/ retract when it is passed under their nostrils, can tell that they can smell the substance.

A

Olfactory Nerve (CN I)

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20
Q

Originates: Ventral Midbrain
Exits: Optic Canal

A

Optic Nerve (CN II)

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21
Q

SSA fibers: Vision
Temporal = lateral
Nasal = medial

A

Optic Nerve (CN II)

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22
Q

Which visual fibers cross?

A

Nasal fibers

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23
Q

Which visual fibers do not cross?

A

Temporal fibers

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24
Q

R Visual Cortex (brain) sees what visual field?

A

Left visual field

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25
Q

L Visual Cortex (brain) sees what visual field?

A

Right visual field

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26
Q

Optic Nerve -> optic canal (enters cranial cavity) -> Optic chiasm (crossing occurs) -> optic tract -> Lateral Geniculate Nucleus -> optic Radiations -> Occipital Visual Cortex

A

Optic Nerve (CN II)

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27
Q

A lesion in the right visual cortex will cause what?

A

Absent Left visual field

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28
Q

Test of visual eye fields

A

Testing for Optic Nerve (CN II)

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29
Q

Originates: Interpeduncular fossa
Exits: Superior Orbital Fissure

A

Oculomotor Nerve (CN III)

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30
Q

Which two arteries surround the Oculomotor Nerve?

A

Superior Cerebellar Artery and Posterior Cerebral Artery

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31
Q

What are the two SVE branches of the Oculomotor Nerve?

A

Superior and Inferior Branches.

32
Q

What are the two muscles innervated by GVE (autonomic) fibers of the Oculomotor Nerve?

A

Ciliary muscle and Constrictor Pupillae muscle

33
Q

What does the Superior Branch of the Oculomotor Nerve Innervate?

A

Levator Palpebral Superioris muscle and Superior Rectus muscle

34
Q

What does the Inferior Branch of the Oculomotor Nerve Innervate?

A

Inferior Rectus muscle, inferior oblique muscle, and medial rectus muscle

35
Q

Eye movement, elevate eyelids, pupillary control

A

Function of Oculomotor Nerve (CN III)

36
Q

Direct Light Reflex: shine light in eye = pupil constriction
Consensual Light Reflex: will see a small constriction in the pupil of the opposite eye

A

Test for Oculomotor Nerve (CN III)

37
Q

Compresses the Oculomotor nerve, causing a dilated “blown” pupil on the ipsilateral side of the lesion. Will also see drooping of eyelid.

A

Uncal Herniation

38
Q

Midbrain of CNS -> Accessory Oculomotor Nucleus (Edinger-Westphal) -> parasympathetic preganglionic axons of CN III -> Ciliary Ganglion (right over Optic n.) -> originates new, postganglionic axons: Short Ciliary nerves -> Ciliary m. or Constrictor Pupillae m. -> Pupil constriction/dilation

A

Oculomotor Nerve (CN III) Parasympathetic Innervation

39
Q

Originates: Dorsal Aspect of Brainstem (under/behind the inferior colliculi). Wraps around pons/midbrain
Exits: Superior Orbital Fissure

A

Trochlear Nerve (CN IV)

40
Q

Supplies SVE fibers for the Superior Oblique Muscle

A

Trochlear Nerve (CN IV)

41
Q

Only CN that crosses at the superior medullary velum

A

Trochlear Nerve (CN IV)

42
Q

“Follow my finger”

A

Test for Trochlear Nerve (CN IV)

43
Q

Originates: Ventrolateral Pons

Exits: Superior Orbital Fissure (1), Foramen Rotundum (2), Foramen Ovale (3)

A

Trigeminal Nerve (CN V)

44
Q

1: Ophthalmic
2: Maxillary
3: Mandibular

A

Trigeminal Nerve (CN V) Branches

45
Q

Sensory fibers for the Trigeminal Nerve originate here

A

Trigeminal Ganglion

46
Q

Lightly brush something on someone’s face or see if patient can clench teeth equally

A

Test for Trigeminal Nerve (CN V)

47
Q

Originates: Ventrolateral pons
Exits: Superior Orbital Fissure

A

Ophthalmic nerve (V1)

48
Q

Tentorial nerve, Frontral nerve, Lacrimal nerve, and Nasociliary nerve

A

Branches of the Ophthalmic nerve (V1)

49
Q

Supplies GSA (sensory) to the Tentorium Cerebelli (what separates the cerebellum from the occipital lobe)

A

Tentorial Nerve (branch of Opthalmic nerve V1)

50
Q

Has the Supraorbital branch and the Supratrochlear branch

A

Frontal Nerve (branch of Ophthalmic Nerve V1)

51
Q

Supplies GSA (sensory) to the upper forehead, scalp to vertex, and frontal sinuses

A

Supraorbital Branch of the Frontal Nerve (branch of Ophthalmic Nerve V1)

52
Q

Supplies GSA (sensory) to the lower forehead.

A

Supratrochlear Branch of the Frontal Nerve (branch of Ophthalmic Nerve V1)

53
Q

Long Ciliary nerves, Anterior Ethmoidal Nerve, Posterior Ethmoidal Nerve, and Infratrochlear nerve

A

Branches of the Nasociliary Nerve (Branch of Ophthalmic Nerve V1)

54
Q

Supplies GSA (Sensory) to the cornea, conjunctiva, and sclera

A

Long Ciliary Nerve (Branch of the Nasociliary Nerve - Branch of the Ophthalmic Nerve)

55
Q

Supplies GSA (sensory) to the vestibule of the nose and anterior nasal cavity.

A

Anterior Ethmoidal Nerve (Branch of the Nasociliary Nerve - Branch of the Ophthalmic Nerve)

56
Q

Supplies GSA (sensory) to the Sphenoid Sinus and the Ethmoidal Air cells

A

Posterior Ethmoidal Nerve (Branch of the Nasociliary Nerve - Branch of the Ophthalmic Nerve)

57
Q

Supplies GSA (sensory) to the upper eyelid

A

Infratrochlear Nerve (Branch of the Nasociliary Nerve - Branch of the Ophthalmic Nerve)

58
Q

Supplies GSA (sensory) to the forehead, scalp to vertex (crown), conjunctiva, sclera, skin over nose, upper eyelid, ethmoidal air cells, and frontal & Sphenoid sinuses

A

Ophthalmic Nerve (V1)

59
Q

Originates: Ventrolateral Pons
Exits: Foramen Rotundum

A

Maxillary Nerve (V2)

60
Q

Meningeal Nerve, Pterygopalatine nerve, Nasopalatine nerve, Lateral Posterior Superior Nasal nerve, Pharyngeal Nerve, Superior Alveolar Nerve, Zygomaticotemporal nerve, and infraorbital nerve

A

Branches of the Maxillary Nerve (V2)

61
Q

Supplies GSA (Sensory) to the Dura Mater

A

Meningeal Nerve (Branch of the Maxillary Nerve V2)

62
Q

Branches into the Greater Palatine nerve (GSA-sensory to the hard palate) and the Lesser Palatine nerve (GSA-sensory to the soft palate)

A

Pterygopalatine nerve (Branch of the Maxillary Nerve V2)

63
Q

Supplies GSA fibers (sensory) to the nasal septum

A

Nasopalatine nerve (Branch of the Maxillary Nerve V2)

64
Q

Supplies GSA fibers (sensory) to the lateral nasal cavity

A

Lateral Posterior Superior Nasal nerve (Branch of the Maxillary Nerve V2)

65
Q

Supplies GSA fibers (Sensory) to the Nasopharynx

A

Pharyngeal nerve (Branch of the Maxillary Nerve V2)

66
Q

Supplies GSA fibers (sensory) to the upper molars (posterior), upper premolars (middle), and upper canines and incisors (anterior)

A

Superior Alveolar Nerve (Branch of the Maxillary Nerve V2)

67
Q

Supplies GSA fibers (Sensory) to the zygomatic portion of the face and anterior temple

A

Zygomaticotemporal nerve (Branch of the Maxillary Nerve V2)

68
Q

Supplies GSA fibers (sensory) to the middle face (maxilla)

A

Infraorbital nerve (Branch of the Maxillary Nerve V2)

69
Q

Supplies GSA fibers (sensory) to the alae (sides) of nose, middle face (skin over maxilla), and anterior temple (lower eyelid, maxillary sinus, nasopharynx, nasal cavity, palate, and upper teeth)

A

Maxillary Nerve (V2)

70
Q

Originates: Ventrolateral pons
Exits: Foramen Ovale

A

Mandibular Nerve (V3)

71
Q

Supplies GSA fibers (Sensory) to the chin and lower lip; nerve to the mylohyoid

A

Inferior Alveolar Nerve (Branch of the Mandibular Nerve V3)

72
Q

Inferior Alveolar Nerve, Lingual Nerve, Auriculotemporal Nerve, and Buccal Nerve

A

Sensory Branches of the Mandibular Nerve (V3)

73
Q

Carries parasympathetic innervation to the Parotid Gland. Surrounds the Middle Meningeal Artery

A

Auriculotemporal Nerve (Branch of the Mandibular Nerve V3)

74
Q

Supplies GSA fibers (Sensory) to the cheek/buccal area

A

Buccal Nerve (Branch of the Mandibular Nerve V3)

75
Q

Supplies SVE fibers (motor) to the Anterior Belly of the Digastric, Mylohyoid muscle, Tensor Veli Palatini muscle, Tensor Tympani muscle, Masseter muscle, Temporalis muscle, and Medial & Lateral Pterygoid muscles.

A

Mandibular Nerve (V3)

76
Q

Supplies GSA fibers (Sensory) to the chin, jaw, posterior temple (buccal area, anterior 2/3 of the tongue, floor of the mouth/teeth, and TMJ)

A

Mandibular Nerve (V3)

Anatomy Unit 2 (9 decks)

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