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NeuroEndocrine > Cranial Nervez > Flashcards

Cranial Nervez Flashcards

(54 cards)

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1
Q

CN I

A

Olfactory N

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2
Q

CN II

A

Optic N

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3
Q

CN III

A

Oculomotor N

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4
Q

CN IV

A

Trochlear N

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5
Q

CN V

A

Trigeminal N

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6
Q

CN VI

A

Abducens N

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7
Q

CN VII

A

Facial N

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8
Q

CN VIII

A

Vestibulochochlear N

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9
Q

CN IX

A

Glossopharyngeal N

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10
Q

CN X

A

Vagus

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11
Q

CN XI

A

Spinal Accessory N

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12
Q

CN XII

A

Hypoglossal N

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13
Q

Which CN (s) Pass through the cribriform plate in the base of the skull?

A

Olfactory (CN I)

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14
Q

Which CN (s) Pass through the optic canal in the base of the skull?

A

Optic (CN 2)

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15
Q

Which CN (s) Pass through the superior orbital fissure in the base of the skull?

A

Oculomotor (CN III), Trochlear (CN IV), Ophthalmic division of Trigeminal (CN V1), and Abducens (CN VI)

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16
Q

Which CN (s) Pass through the foramen rotundum in the base of the skull?

A

Maxillary division of the Trigeminal N (CN V2)

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17
Q

Which CN (s) Pass through the foramen ovale in the base of the skull?

A

Mandibular division of the Trigeminal N (CN V3)

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18
Q

Which CN (s) Pass through the internal acoustic meatus in the base of the skull?

A

Facial N (CN VII), Vestibulocochlear (CN VIII)

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19
Q

Which CN (s) Pass through the jugular foramen in the base of the skull?

A

Glossopharyngeal N (CN IX), Vagus N (CN X), Spinal Accessory N (CN XI)

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20
Q

Which CN (s) Pass through the hypoglossal canal in the base of the skull?

A

Hypoglossal N (CN XII)

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21
Q

Special Sensory CNs

A

Olfactory, Optic, Vestibulocochlear, Facial, Glossopharyngeal, Vagus (1, 2, 7, 8, 9, 10*)

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22
Q

General Sensory CNs

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A

Trigeminal, Facial, Glossopharyngeal, Vagus (5, 7, 9, 10)

23
Q

Visceral Sensory CNs

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A

Vagus, Glossopharyngeal (9, 10)

24
Q

Visceral Motor (parasympathetic) CNs

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A

Oculomotor, Facial, Glossopharyngeal, and Vagus (3, 7, 9, 10)

25
Branchial Motor
Trigeminal, Facial, Glossopharyngeal, Vagus, Spinal Accessory (5, 7, 9, 10, 11)
26
Somatic Motor
Oculomotor, Trochlear, Abducens, Hypoglossal (3, 4, 6, 7)
27
Function, origin, and pathway for the Olfactory Nerve (CN I)
1) Special Sensory: Olfaction 2) Receptors of bipolar neurons in nasal mucosa of nasal cavity 3) Travels through foramina of the cribriform plate of ethmoid bone and synapses at the olfactory bulb in anterior cranial fossa * Only one with regenerative properties
28
Function, origin, and pathway of the Optic N (CN II)
1) Special sensory: vision 2) Retina of eye 3) Enters cranium via optic foramen of sphenoid bone, L and R optic N unite at optic chiasm, optic tracts travel to lateral geniculate nucleus of thalamus --> Occ. lobe *Basically outgrowth of brain
29
Function, origin, and pathway of Oculomotor N (CN III)
1a) Somatic motor: Supplies 4 extrinsic eye muscles (sup/inf rectus, medial rectus, inf oblique) and the levator palpebrae superioris ( elevates eyelid) 1b) Parasympathetic motor: innervates sphincter pupillae muscle of iris to make pupil constrict, constricts ciliary muscles of lens to make them more rounded for near vision 2) Oculomotor and Edinger Westphal nuclei within mesencephalon 3) Leaves cranium via superior orbital fissure and travels to eye and eyelid (parasympathetic fibers travel to ciliary ganglion, and parasympathetic postganglionic fibers travel to iris and ciliary muscle)
30
Function, origin, and pathway of the Trochlear N (CN IV)
1) Somatic motor fxn; supplies 1 extrinsic eye muscle, superior oblique to move eyeball inferiorly and laterally 2) Trochlear nucleus in mesencephalon 3) Leaves cranium via superior orbital fissure and travels to superior oblique muscle
31
Function, origin, and pathway of the Abducens N (CN VI)
1) Somatic motor fxn; supplies 1 extrinsic eye muscle, the lateral rectus for eye abduction 2) Abducens Nucleus in pons 3) Leaves cranium via superior orbital fissure and travels to lateral rectus muscle
32
Sensory function of V1
Conducts sensory impulses from cornea, nose, forehead, and anterior scalp
33
Sensory function of V2
Conducts sensory impulses from nasal mucosa, palate, gums, and cheek
34
Sensory function of V3
Conducts sensory impulses from anterior 2/3s of tongue, skin of chin, lower jaw, lower teeth; 1/3 from sensory fibers of auricle of ear
35
Somatic motor function of CN V
Muscles of mastication: temporalis, masseter, lateral and medial pterygoids; mylohyoid, anterior belly of digastric, tensor tympani muscle, and tensor veli, palatini
36
What're the 6 CN modalities?
Somatic Motor, Branchial motor, Visceral Motor, Visceral sensory, General Sensory, Special Sensory
37
Special Sensory is also referred to as
SSA (special somatic afferent), SVA (special visceral afferent)
38
Branchial Motor is also referred to as
SVE (special visceral efferent)
39
Visceral Motor is also referred to as
GVE (general visceral efferent) aka parasympathetics
40
Visceral sensory is also referred to as
GVA (general visceral afferent)
41
General Sensory is also referred to as
GSA (General somatic afferent)
42
Somatic Motor is also referred to as
GSE (general somatic efferent) *Somite derived
43
-------------------- fibers arise from nuclei in the brain stem and synapse at which 4 ganglia in the head?
Pre-ganglionic presynaptic | Ciliary, pterygopalatine, Otic, and Submandibular
44
All sympathetic fibers are post-ganglionic arising from the ------------.
Superior Cervical Ganglion
45
Origin and pathway for the trigeminal N?
1) Pons 2) Sensory fibers enter respective foramina and travel to Trigeminal Ganglion before entering pons. Motor fibers leave pons and via foramen ovale to supply muscles
46
Nerve branches of V1
Lacrimal, frontal, Nasociliary, Meningeal
47
Nerve branches of V2
Zygomatic, infraorbital, superior alveolar, Palatine, Meningeal
48
Nerve branches of V3
Sensory: Buccal, Lingual, Inferior alveolar, Auriculotemporal, Meningeal Motor: Medial pterygoid, Lateral pterygoid, Masseteric, Deep Temporal, Mylohyoid
49
Modalities of Facial N (CN VII)
SVA, SVE, GSA, GVE OR Special sensory, Branchial Motor, General sensory, General Motor
50
Sensory function of CN VII
Taste from anterior 2/3 of tongue
51
Somatic motor function of CN VII
Facial expression (5 muscles), posterior belly of digastric, stylohyoid, and Stapedius
52
Parasympathetic function of CN VII
Lacrimal, submandibular (salivary) , and sublingual (salivary)
53
Origin and pathway of CN VII
1) Nuclei within the pons 2) A: Sensory fibers travel from tongue via chorda tympani branch of facial N, enter skull, and synapse at geniculate ganglion of facial n. B: Somatic motor fibers leave the pons and enter temporal bone via internal auditory canal, emerge through stylomastoid foramen to supply musculature. C: Parasympathetic fibers leave the pons, enter internal auditory canal, and leave with either greater petrosal nerve or chorda tympani to glands it innervates.
54
Function, origin, and pathway of CN VIII
1) Cochlear branch conducts impulses for hearing, and vestibular branch conducts impulses for equilibrium 2) Vestibular: Hair cells in vestibule of inner ear Cochlear: Cochlea of inner ear 3) Sensory cell bodies of vestibular branch are located in the vestibular ganglion, while sensory cell bodies of the cochlear branch are located in the spiral ganglion near the cochlea. The vestibular and cochlear branches merge, and together enter the cranial cavity through internal auditory canal and travel to the junction of the pons and medulla

NeuroEndocrine (14 decks)

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