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Anatomy > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

Cranial Nerve 1

A

Olfactory Nerve

Special Sensory (smell)

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2
Q

Cranial Nerve 1Innervation

A

Superior epithelium of nasal cavity for smell

Multiple small fibers of olfactory bulb, bulb sits in cribriform plate

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3
Q

Cranial Nerve II

A

Optic nerve

Special sensory (vision)

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4
Q

Cranial Nerve II Innervation

A

Retina of eyeball for vision

Left & right optic nerves unite at optic chiasm on inferior aspect of the brain

Continue into brain as optic tracts

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5
Q

Cranial Nerve III

A

Oculomotor nerve

Motor-somatic & parasympathetic

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6
Q

Cranial Nerve III Innervation

A

Somatic motor to muscles in orbit, parasympathetic innervation to muscles of iris and ciliary muscles controlling lens shape

Parasympathetic ganglion-ciliary ganglion-is associated with this nerve

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7
Q

Cranial Nerve IV

A

Trochlear nerve

Motor-somatic

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8
Q

Cranial Nerve IV Innervation

A

Motor to superior oblique muscle in orbit

Small-wraps around back of midbrain and enters into dura

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9
Q

Cranial Nerve V1

A

Trigeminal nerve-ophthalmic division

Sensory-somatic

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10
Q

Cranial Nerve V1 Innervation

A

Sensation of orbit, superior nasal cavity, forehead

All branches of CN V provide sensory innervation to dura matter

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11
Q

Cranial Nerve V2

A

Trigeminal nerve-maxillary division

Sensory-somatic

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12
Q

Cranial Nerve V2 Innervation

A

Sensation of skin of face over upper jaw, upper teeth, inferior/posterior nasal cavity, palate in oral cavity

Infraorbital foramen

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13
Q

Cranial nerve V3 Innervation

A

Sensation of skin over lower jaw, side of head, lower teeth, oral cavity, anterior 2/3 of tongue. Motor to muscles of mastication, some palatal/ear muscles.

Passes inferiorly through foramen ovale into infratemporal fossa

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14
Q

Cranial nerve V3

A

Trigeminal nerve-mandibular division

Sensory-somatic
Motor-somatic

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15
Q

Cranial Nerve VI

A

Abducens nerve

Motor-somatic

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16
Q

Cranial Nerve VII

A

Facial nerve

Special sensory-tase from anterior 2/3 of tongue

Motor-somatic & parasympathetic

17
Q

Cranial Nerve VI Innervation

A

Motor to lateral rectus muscle in orbit

18
Q

Cranial Nerve VII Innervation

A

Sensation of taste to anterior 2/3 of tongue

Somatic motor control to muscles of facial expression, stapedius muscle in ear, posterior digastric and stylohyoid.

Parasympathetic innervation to glands of orbit/nose, submandibular and sublingual salivary glands.

19
Q

Cranial Nerve VIII

A

Vestibulocochlear nerve

Special sensory-balance and hearing

20
Q

Cranial Nerve VIII Innervation

A

Special sensory innervation to semicircular canals (balance), and cochlea (hearing).

Divides in temporal bone into two divisions, vestibular to semicircular canals and cochlear to cochlea.

21
Q

Cranial Nerve IX Innervation

A

Taste and general sensation to posterior 1/3 of tongue, soft palate, and pharynx near tongue, general sensation of tympanic cavity, tympanic membrane, auditory tube.

Somatic motor innervation to stylopharyngeus muscle, parasympathetic innervation to parotid gland, visceral sensory innervation to carotid bifurcation for blood pressure control

22
Q

Cranial Nerve IX

A

Glossopharyngeal nerve

Special sensory-taste from posterior 1/3 of tongue

Sensory-somatic and visceral

Motor-somatic and parasympathetic

23
Q

Cranial Nerve X

A

Vagus nerve

Special sensory-taste to pharynx

Sensory-somatic and visceral

Motor-somatic and parasympathetic

24
Q

Cranial Nerve X Innervation

A

Special sensory innervation of taste to palate/epiglottis, general sensory innervation from epiglottis, larynx

Visceral sensory innervation to GI tract, thorax, abdomen

Somatic motor innervation to pharynx, larynx, palatal muscles. Parasympathetic motor innervation to GI tract, thorax, abdomen

25
Q

Cranial Nerve XI

A

Spinal accessory nerve

Motor-somatic

26
Q

Cranial Nerve XI Innervation

A

Sternocleidomastoid, trapezius

27
Q

Cranial Nerve XII

A

Hypoglossal nerve

Motor-somatic

28
Q

Cranial Nerve XII Innervation

A

Intrinsic and extrinsic muscles of tongue (not palatoglossus)

Visible in neck just superior to carotid bifurcation

Anatomy (25 decks)

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