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Anatomy (Neck and Head) > Cranial Nerve Overview (11.15.2017) > Flashcards

Cranial Nerve Overview (11.15.2017) Flashcards

(71 cards)

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1
Q

What is CN I?

A

Olfactory

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2
Q

What is CN II?

A

Optic

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3
Q

What is CN III?

A

Oculomotor

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4
Q

What is CN IV?

A

Trochlear

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5
Q

What is CN V?

A

Trigeminal

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6
Q

What is CN VI?

A

Abducent

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7
Q

What is CN VII?

A

Facial

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8
Q

What is CN VIII?

A

Vestibulocochlear

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9
Q

What is CN IX?

A

Glossopharyngeal

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10
Q

What is CN X?

A

Vagus

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11
Q

What is CN XI?

A

Accessory

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12
Q

What is CN XII?

A

Hypoglossal

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13
Q

Where does the Olfactory (CN I) exit the cranium?

A

Cribriform plate

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14
Q

Olfactory nerve target?

A

Olfactory nerves

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15
Q

Optic nerve (CN II) cranial exit?

A

Optic canal

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16
Q

Optic nerve target?

A

Retina/eye

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17
Q

Oculomotor nerve (CN III) fiber type?

A
  • Motor

- Parasympathetic

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18
Q

Oculomotor nerve (CN III) cranial exit?

A

Superior orbital fissure

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19
Q

Oculomotor target?

A
  • Levator palpebrae superioris muscle

- 4 extraocular muscles

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20
Q

Oculomotor nerve parasympathetic innervation targets?

A
  • Ciliary muscle

- Sphincter pupillae muscle

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21
Q

Trochlear nerve (CN IV) fiber type?

A

motor

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22
Q

Trochlear nerve (CN IV) cranial exit?

A

Superior orbital fissure

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23
Q

Trochlear nerve target?

A

Superior oblique muscle (helps you look down and in)

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24
Q

What are the 3 divisions of the Trigeminal (CN V)?

A
  1. Opthalmic Division (CN V1)
  2. Maxillary Division (CN V2)
  3. Mandibular Division (CN V3)
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25
What is the fiber type of CN V1 (opthalmic)
somatic sensory
26
What is the cranial exit of CN V1 (opthalmic)
Superior orbital fissure
27
Target of CN V1?
- Skin of scalp, forehead, upper eyelid - Cornea - Anterior nasal cavity - Frontal and ethmoid sinuses
28
What is the fiber type of CN V2 (maxillary)?
Somatic sensory
29
What is the cranial exit for CN V2 (maxillary)?
foramen rotundum
30
What are the targets of CN V2?
- Skin of face and scalp, lower eyelid, upper lip - Maxillary teeth and gingivae - Maxillary sinuses - Mucosa of posterior nasal cavity - Hard and soft palates
31
What is/are the fiber type(s) of CN V3 (mandibular)?
- Motor | - Somatic sensory
32
What is the cranial exit for CN V3?
Foramen ovale
33
What are the (4) sensory targets of CN V3?
Somatic sensory to: - Skin of scalp and skin of face, cheek and lower lip - External tympanic membrane - Mandibular teeth and gingivae - Anterior 2/3rds of tongue
34
What are the (5) muscle targets of CN V3?
Somatic motor: - muscles of mastication (temporalis, masseter, medial pterygoid, lateral pterygoid) - anterior belly of digastric - Mylohyoid - Tensor veli palatini (tenses soft palate) - Tensor tympani muscles (tenses the ear drum to dampen sound)
35
Fiber type in cranial nerve VI (abducent)?
Motor
36
What is the cranial exit of CN VI (abducent)?
superior orbital fissure
37
Target of cranial nerve VI (abducent)?
lateral rectus muscle (abducts the eyeball)
38
Fiber type of cranial nerve VII (Facial)?
- Somatic motor - Special sensory - Parasympathetic *sympathetic (sympathetic fibers from the deep petrosal nerve travel with facial nerve)
39
Where does cranial nerve VII (facial) exit the cranium?
Stylomastoid foramen
40
What is the general pathway of Facial nerve (CN VII)?
``` Internal acoustic meatus, facial canal 1.Chorda tympania 2. Branch to stapedius muscle 3. Greater petrosal Exits facial canal via stylomastoid foramen, travels inferiorly ```
41
What are the main targets of Cranial nerve VII?
- Somatic motor to stapedius - Muscles of facial expression - Stylohyoid muscle - Posterior belly of digastric muscle
42
Which nerve does Chorda tympani hitchhike with?
hitchhikes with lingual nerve (branch of CN V3)
43
What are the targets of Chorda tympani?
``` Special sensory (taste): anterior 2/3 of the tongue ``` Parasympathetic: submandibular and sublingual glands
44
Where does the greater petrosal portion of Facial nerve VII exit the cranium?
Exits temporal bone
45
What is the Chorda tympani pathway?
Middle ear, hitchhike on lingual nerve (CN V3), anterior and posterior to targets OR submandibular ganglion (synapse), oral cavity
46
What is the Greater Petrosal pathway?
Exit temporal bone - joins with deep petrosal nerves (carries sympathetic fibers) - pterygoid canal - pterygopalatine ganglion (synapese) - Hitchhike on CN V2 - Travels anteriorly
47
What are the targets of the greater petrosal nerve?
Parasympathetic and sympathetic: 1. Lacrimal gland 2. Nasal mucosa
48
What is the fiber type of Vestibulocochlear CN VIII?
Special sensory
49
Where does CN VIII exit the cranium?
Internal acoustic meatus
50
What are the targets of CN VIII?
1. Cochlea | 2. Semicircular canals
51
What fiber types are contained in CN IX Glossopharyngeal?
- Somatic Sensory - Visceral sensory - Special Sensory - Somatic Motor - Parasympathetic (visceral motor)
52
Where does CN IX exit the cranium?
Jugular foramen
53
What are the somatic motor and visceral sensory targets of CN IX?
Somatic motor: -stylopharyngeus muscle Visceral sensory: -carotid body and sinus
54
What are the somatic sensory targets of CN IX?
Somatic sensory: 1. oropharynx 2. Soft palate 3. Posterior 1/3 of tongue
55
What is the special sensory targets of CN IX?
Taste: Posterior 1/3 of tongue
56
What are the targets of the tympanic nerve (CN IX)?
Somatic sensory: internal surface of tympanic membrane
57
What is the target of the Lesser Petrosal Nerve (CN IX)?
Parasympathetic to parotid gland
58
What types of fibers are in CN X (vagus)?
1. Motor 2. Somatic Sensory 3. Special Sensory
59
Where does the vagus nerve exit the cranium?
Jugular foramen
60
What are the targets of the Pharyngeal branch of the Vagus nerve?
Somatic motor: 1. pharyngeal constrictors 2. levator veli palatini muscles 3. palatoglossus muscles 4. palatopharyngeus muscles 5. esophagus
61
What does the pharyngeal branch of the vagus nerve supply special sensory to?
epiglottis
62
What is the somatic motor target of the superior laryngeal branch of vagus nerve?
somatic motor: | cricothyroid muscle
63
What does the superior laryngeal branch of CN X supply somatic sensory to?
Laryngeal mucosa superior to vocal folds
64
What is the somatic motor target of the inferior laryngeal branch of CN X?
somatic motor to intrinsic muscles of larynx
65
What does the inferior laryngeal branch of CN X supply somatic sensory to?
somatic sensory to laryngeal mucosa inferior to vocal folds
66
What type of fiber does CN XI have?
motor
67
Where does CN XI exit the cranium?
Jugular foramen
68
What are the targets of CN XI?
1. sternocleidomastoid | 2. Trapezius
69
What type of fiber does CN II have?
Hypoglossal has motor fibers
70
Where does CN XII exit the cranium?
Hypoglossal canal
71
What are the targets of CNII?
Intrinsic and most extrinsic muscles of the tongue.

Anatomy (Neck and Head) (8 decks)

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