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D1 Anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

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

Occulomotor N.

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4
Q

CN IV

A

Trochlear N.

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5
Q

CN VI

A

Abducent N.

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6
Q

CN VII

A

Facial N.

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7
Q

CN VIII

A

Vestibulocochlear N.

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8
Q

CN IX

A

Glossopharyngeal N.

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9
Q

CN X

A

Vagus N. *parasympathetic innervation to viscera of thorax, foregut and midgut

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10
Q

CN XI

A

Accessory N.

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11
Q

CN XII

A

Hypoglossal N.

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12
Q

Functions of Cranial Nerves

A

General sensation from tissues of the head, five special sensory functions, motor innvervation to skeletal muscles of the head, autonomic innervation of smooth muscle and glands of the head

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13
Q

divisions of trigeminal nerve

A

V1: Opthalmic V2:MaxillaryV3: Mandibular

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14
Q

Type of fibers that CN’s carry

A

GSA, GSE, GVA, GVE, BE, SA (each will carry a specific combination of these and no one CN will carry all 6)

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15
Q

Sensory Only CN’s

A

I, II, VIII

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16
Q

Motor Only CN’s

A

III, IV, VI, XI, XII

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17
Q

Motor and Sensory Mixed CN’s

A

V, VII, IX, X

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18
Q

Pairs of Spinal Nerves

A

31

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19
Q

Pairs of Cranial Nerves

A

12

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20
Q

CN V: Peripheral Sensory ganglia

A

Trigeminal (V1, V2, V3)

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21
Q

CN VII Peripheral Sensory Ganglia

A

Geniculate

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22
Q

CN VIII Peripheral Sensory ganglia

A

Vestibular and Spiral

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23
Q

CN IX Peripheral sensory ganglia

A

Inferior and superior

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24
Q

CN X peripheral sensory ganglia

A

Superior and inferior

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25
Q

SSA is responsible for what senses

A

vision hearing equilibrium taste and smell

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26
Q

GSE is responsible for what

A

motor innervation to skeletal muscle in the head derived from somite mesoderm

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27
Q

Crainial Nerve GVE fibers are responsible for what

A

PARASYMPATHETIC motor innervation to smooth muscle and glands of the head.

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28
Q

CN’s with GVE capabilities

A

III, VII, IX, X

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29
Q

Special Motor (Branchiomeric Motor BE)

A

motor to skeletal muscle in the head derived from branchial (pharyngeal arch) mesoderm

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30
Q

First Pharyngeal arch (mandibular arch) is innervated by

A

V3 mandibular

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31
Q

Second Pharyngeal Arch (hyoid arch) is innervated by

A

VII facial

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32
Q

Third Pharyngeal Arch is innervated by

A

IX Glossopharyngeal

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33
Q

Fourth and sixth pharyngeal arches

A

X Vagus

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34
Q

GSA Cell Bodies

A

DRG (Pseudounipolar)

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35
Q

GSE Cell Bodies

A

Ventral Horn of Spinal cord gray mater

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36
Q

SSA cell bodies are located

A

Peripheral Sensory Ganglia (eg. trigeminal and geniculate)

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37
Q

BE cell bodies are located

A

Brainstem motor nuclei (multipolar)

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38
Q

CN I and II have sensory function but are not associated with organized sensory ganglia (True or False)

A

True

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39
Q

Sensory neurons of CN I are located where

A

Diffusely dispersed in Olfactory bulb

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40
Q

Sensory neurons of CNII are located where

A

Diffusely dispersed in the retina

41
Q

Brainstem motor nuclei are analogous to what

A

ventral horn of the spinal cord gray matter

42
Q

Peripheral Sensory Ganglia of CN’s are analogous to what

A

Dorsal Root ganglia

43
Q

Spinal GVA cell bodies

A

dorsal root ganglia

44
Q

Spinal Sympathetic preganglionic fibers arise from which segments

A

TI-L2 (lateral horn of spinal cord gray matter)

45
Q

Spinal Post ganglionic sympathetic cell bodies are found where

A

chain ganglia, collateral ganglia,

46
Q

spinal parasympathetic preganglionic cell bodies are located where

A

S2-S4 in the spinal cord gray matter

47
Q

post ganglionic cell bodies of spinal parasympathetics are found where

A

in terminal motor ganglia on or near the target viscera which they supply

48
Q

Targets of parasympathetic in spinal nerves

A

viscera of hing gut and pelvis

49
Q

Targets of Spinal sympathetic fibers

A

Sweat Glands, Smooth Muscle, Viscera of the body wall, Head, Thorax, Abdomen and pelvis

50
Q

Cranial Nerve Preganglionic Sympathetic Cell Bodies

A

Spinal Cord Gray Matter (T1-T2)

51
Q

CN Post Ganglionic Sympathetic Cell bodies

A

superior cervical chain ganglia

52
Q

Course of post ganglionic sympathetic fibers

A

do not typically course with cranial nerves, ins stead they form peri-arterial plexus which surounds the internal carotid artery

53
Q

Cranial Nerve GVA sensory cell bodies are found where

A

Superior and Inferior Sensory Ganglia of CN IX and X

54
Q

Cranial Nerve Parasympathetic Preganglionic Cell bodies

A

Brainstem motor nuclei of CN III, VII, IX, and X

55
Q

CN Parasympathetic Postganglionic cell bodies

A

Terminal motor ganglia of the head (Cilliary, submandibular, otic, pterygopalatine) of intrinsic motor ganglia of the thorax, foregut and midgut

56
Q

Terminal motor ganglia of CN III

A

Cilliary

57
Q

Terminal Motor Ganglia of CN VII

A

Submandibular, Pterygopalatine

58
Q

Terminal Motor Ganglia of CN IX

A

Otic

59
Q

Terminal Motor Ganglia of CN X

A

Intrinsic ganglia of the viscera of the thorax, foregut and midgut

60
Q

CN’s with sensory function only

A

CN I, CN II. and CN VIII *only carry SA special sensory

61
Q

SA function of CN I

A

olfaction

62
Q

SA function of CN II

A

vision

63
Q

SA function of CN VIII

A

Hearing and Equilibrium

64
Q

CN’s with motor function only

A

III occulomotor, IV trochlear, VI abducent, XI accesory, XII hypoglossal

65
Q

GSE function of CN III: Occulomotor

A

motor to 5 extraocular muscles (levator palpebrae superioris, superior rectus, inferior rectus, medial rectus and inferior oblique)

66
Q

GSE function of CN IV :Trochlear

A

motor to one extraoccular muscle (superior oblique)

67
Q

GSE function of CN VI: Abducent

A

motor innervation to one extraoccular muscle (lateral rectus)

68
Q

GSE function of CN XI: Accessory

A

Motor to trapezius and sternocleidomastoid muscles

69
Q

GSE function of CN XII: Hypoglossal

A

motor to 3 extrinsic muscles of the tongue (hypoglossus, genioglossus, styloglossus) and all the intrinsic muscles of the tongue

70
Q

Mixed function CN’s

A

V, VII, IX, and X

71
Q

CN V contains which fibers

A

GSA, BE

72
Q

CN VII carries which fibers

A

GSA, SA, BE, GVE

73
Q

CN IX carries which fibers

A

GSA, GVA, SA, BE, GVE

74
Q

CN X carries which fibers

A

GSA, GVA, SA, BE, GVE

75
Q

CN V : Trigeminal GSA sensory from

A

skin of the face and scalp, conjunctiva, globe, orbit, meninges, teeth, gums, external ear, nasal cavity, nasal sinuses, oral cavity and anterior 2/3 of the tongue

76
Q

CN VII: Facial relays GSA sensory from

A

external ear

77
Q

CN V: Trigeminal BE innervation to

A

muscles derives from 1st arch (V3 only)

78
Q

CN VII: Facial relays SA sensory from

A

tastes from the anterior 2/3 of the tongue and soft palate

79
Q

CN VII: Facial supplies BE innervation to

A

Muscles of the second arch

80
Q

CN VII: facial supplies GVE innervation to

A

parasympathetic motor innveration to lacrimal, submandibular and sublingual glands, mucous glands of the membranes of the oral cavity, nasal cavity and soft palate.

81
Q

CN IX: Glossopharyngeal relays GSA from

A

sensory from the external ear, mucous membrane of tympanic membrane, auditory tube, posterior 1/3 of the tongue, oropharynx and posterior aspect of nasopharynx

82
Q

CN IX: Glossopharyngeal relays GVA from

A

sensory from the carotid sinus

83
Q

CN IX: Glossopharyngeal relays SA from

A

taste from posterior 1/3 of the tongue

84
Q

CN IX supplies BE innervation to

A

muscles of the 3rd arch

85
Q

CN IX supplies GVE innveration to

A

parasympathetic innervation to the parotid gland

86
Q

CN X relays GSA sensory from

A

external ear, lower 1/3 of the pharyngeal mucosa and esophagus, laryngeal mucosa and root of the tongue

87
Q

CN X relays GVA sensory from

A

the carotid body and baro-receptors and viscera of the thorax, foregut and midgut

88
Q

CN X relays SA from

A

taste from the base of the tongue and epiglottis (root of the tongue)

89
Q

CN X supplies BE innervation to

A

“all the muscles of the larynx, all the muscles fo the palate (except tensor vali palatini (V-3), all the muscles of the pharynx (except stylopharyngeus) muscles of the 4th/6th arch *remember 5th is rudamentary

90
Q

CN X: Vagus supplies GVE innveration to

A

parasympathetic innervation to viscera, smooth muscle and glands in the trachea, esophagus, thoracic and abdominal viscera (Foregut and midgut)

91
Q

auricular nerve

A

CN X: GSA to external ear

92
Q

meningeal nerve

A

CN X: GSA to the dura in the posterior cranial fossa

93
Q

sinus nerve

A

CN X: GVA to the carotid body

94
Q

Pharyngeal nerve

A

CN X: BE to palatoglossus, all muscles of the pharynx (except stylopharyngeus) and all the muscles of the soft palat (except tensor veli palatini)

95
Q

Internal Branch of superior laryngeal nerve

A

GSA to mucosal lining of the laryngopharynx downt ot eh vocal folds, GVE parasympathetic to glands of the pharynx, GSA to the root of the tongue and epiglottis

96
Q

external branch of the superior laryngeal nerve

A

BE to cricothyroid muscle

97
Q

recurrent (inferior) laryngeal

A

BE to all other muscles of the vocal folds (except cricothyroid), GSA to mucosal lining of the larynx below the vocal folds

98
Q

Cardiac branches

A

GVE paraympathetic to heart

D1 Anatomy (4 decks)

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