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Head and Neck > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What is Cranial Nerve I?

A

Olfactory Nerve

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2
Q

What is Cranial Nerve II?

A

Optic Nerve

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3
Q

What is Cranial Nerve III?

A

Oculomotor Nerve

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4
Q

What is Cranial Nerve IV?

A

Trochlear Nerve

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5
Q

What is Cranial Nerve V?

A

Trigeminal Nerve

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6
Q

What is Cranial Nerve VI?

A

Abducent Nerve

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7
Q

What is Cranial Nerve VII?

A

Facial Nerve

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8
Q

What is Cranial Nerve VIII?

A

Vestibulocochlear Nerve

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9
Q

What is Cranial Nerve IX?

A

Glossopharyngeal Nerve

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10
Q

What is Cranial Nerve X?

A

Vagus Nerve

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11
Q

What is Cranial Nerve XI?

A

Accessory Nerve

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12
Q

What is Cranial Nerve XII?

A

Hypoglossal Nerve

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13
Q

Where does the olfactory nerve exit the skull?

A

In the cribriform plate of the ethmoid bone

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14
Q

Where does the optic nerve exit the skull?

A

In the Optic Canal

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15
Q

Where does the oculomotor nerve exit the skull?

A

In the Superior Orbital Fissure

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16
Q

Where does the Trochlear nerve exit the skull?

A

In the Superior Orbital Fissure

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17
Q

What are the 3 divisions of the Trigeminal Nerve?

A 
Ophthalmic nerve (V1)
Maxillary Nerve (V2)
Mandibular Nerve (V3)
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18
Q

Where does the ophthalmic division leave the skull?

A

In the Superior Orbital Fissure

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19
Q

Where does the Maxillary division leave the skull?

A

In the Foramen Rotundum

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20
Q

Where does the Mandibular division exit the skull?

A

In the Foramen Ovale

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21
Q

Where does the Abducent Nerve exit the skull?

A

In the Superior Orbital Fissure

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22
Q

Where does the Facial Nerve exit the skull?

A

Leaves the Cranial Cavity through the Internal Acoustic Meatus
(gives rise to branches in the facial canal of the temporal bone before exiting through the stylomastoid foramen)

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23
Q

Where does the Vestibulocochlear Nerve exit the skull?

A

In the Internal Acoustic Meatus

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24
Q

Where does the Glossopharyngeal Nerve exit the skull?

A

Through the Jugular Foramen

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25
Q

Where does the Vagus Nerve exit the skull?

A

Through the Jugular Foramen

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26
Q

Where does the Accessory Nerve exit the skull?

A

Through the Jugular Foramen

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27
Q

Where does the Hypoglossal Nerve exit the skull?

A

Through the hypoglossal canal

28
Q

What is the function of the olfactory nerve?

A

Smell

29
Q

What is the function of the optic nerve?

A

Vision

30
Q

What is the function of the oculomotor nerve?

A

Pupillary Constriction, accommodation of the lens for near vision

31
Q

What is the function of the trochlear nerve?

A

Innervates superior oblique muscle

32
Q

What is the function of the ophthalmic division of the trigeminal nerve?

A

Carries sensory branches from eyes, conjunctiva and orbital contents
Receives sensory branches from the nasal cavity, frontal sinus, ethmoidal cells, falx cerebri, dura in the anterior cranial fossa, superior parts of the tentorium cerebelli, upper eyelid, dorsum of the nose and anterior part of the sculp

33
Q

What is the function of the maxillary branch of the trigeminal nerve?

A

Receives Sensory branches from the dura in the middle cranial fossa, the nasopharynx, the palate, the nasal cavity, teeth of the upper jaw, maxillary sinus, the skin covering the side of the nose, the lower eyelid, the cheek and the upper lid

34
Q

What is the function of the mandibular branch of the trigeminal nerve?

A

Innervates the muscles of mastication as well as the tensor tympani, tensor veli palatine, the anterior belly of digastric and the mylohyoid muscle

35
Q

What is the function of the Abducent Nerve?

A

Innervates Lateral Rectus Muscle

36
Q

What is the function of the Facial Nerve?

A

Sensory from part of EAM and deeper parts of the auricle
Taste from ant. 2/3rd of tongue
Innervates lacrimal gland, submandibular and sublingual salivary glands, mucous membranes of nasal cavity, hard and soft palates
Innervates muscles of facial expression, scalp derived from the 2nd pharyngeal arch, stapedius, posterior belly of digastric, stylohyoid muscles

37
Q

What is the function of the Vestibulocochlear Nerve?

A

Vestibular division- balance

Cochlear Division- hearing

38
Q

What is the function of the Glossopharyngeal Nerve?

A 
Sensory from carotid body and sinus
sensory to post. 1/3rd of tongue, palatine tonsils, oropharynx, muscosa of middle ear, pharyngotympanic tube and mastoid air cells
Taste from post. 1/3rd of tongue
Innervates parotid Salivary Gland
Innervates stylopharyngeus muscle
39
Q

What is the function of the Accessory Nerve?

A

Innervates sternocleidomastoid and trapezius muscles

40
Q

What is the function of the Hypoglossal Nerve?

A

Innervates hyoglossus, genioglossus, and styloglossus muscles + all intrinsic muscles of the tongue

41
Q

What component(s) does the Olfactory nerve have?

A

Special Afferent

42
Q

What component(s) does the optic nerve have?

A

Special Afferent

43
Q

What component(s) does the oculomotor nerve have?

A

General Somatic Efferent

General Visceral Efferent

44
Q

What component(s) does the trochlear nerve have?

A

General Somatic Efferent

45
Q

What component(s) does the trigeminal nerve have?

A 
General Somatic Afferent 
Branchial Efferent (Special Visceral Efferent)
46
Q

What component(s) does the ophthalmic division of the trigeminal nerve have?

A

General Somatic Afferent

47
Q

What component(s) does the maxillary division of the trigeminal nerve have?

A

General Somatic Afferent

48
Q

What component(s) does the mandibular division of the trigeminal nerve have?

A 
General Somatic Afferent
Branchial Efferent (Motor)
49
Q

What component(s) does the Abducent nerve have?

A

General Somatic Efferent

50
Q

What component(s) does the Facial nerve have?

A

General Somatic Afferent
Special Afferent
General Visceral Efferent
Branchial Efferent

51
Q

What component(s) does the vestibulocochlear nerve have?

A

Special Afferent

52
Q

What component(s) does the glossopharyngeal nerve have?

A 
General Visceral Afferent
Special Afferent
General Sensory Afferent
General Visceral Efferent
Branchial Efferent
53
Q

What component(s) does the Vagus nerve have?

A 
General Sensory Afferent
General Visceral Afferent
Special Afferent
General Visceral Efferent
Branchial Efferent
54
Q

What component(s) does the accessory nerve have?

A

General Sensory Efferent

55
Q

What component(s) does the hypoglossal nerve have?

A

General Sensory Efferent

56
Q

What are the five main branches of the facial nerve?

A

Temporal, Zygomatic, Buccal, Marginal Mandibular, Cervical branches

57
Q

What does the cervical branch of the facial nerve supply?

A

Innervates the Platysma

58
Q

What does the Marginal mandibular branch of the facial nerve supply?

A

Innervates the mentalis

59
Q

What does the buccal branches of the facial nerve supply?

A

Innervates the orbicularis oris, buccinators and zygomaticus

60
Q

What does the zygomatic branches of the facial nerve supply?

A

Innervate the orbicularis oculi

61
Q

What does the temporal branches of the facial nerve supply?

A

Innervate the frontalis, orbicularis oculi and corrugator supercilli

62
Q

What does the Sensory Component of the Vagus nerve do?

A

Innervates the skin of the eam and the int. surfaces of the laryngopharynx and larynx.
Provides visceral sensation to the heart and abdominal viscera.

63
Q

What does the Special Sensory Component of the Vagus nerve do?

A

Provides taste sensation to the epiglottis and root of the tongue.

64
Q

What does the Motor Component of the Vagus nerve do?

A

Provides motor innervation to the majority of the muscles of the pharynx, soft palate and larynx.

65
Q

What does the Parasympathetic Component of the Vagus nerve do?

A

Innervates the smooth muscle of the trachea, bronchi and gastro-intestinal tract and regulates heart rhythm.

Head and Neck (4 decks)

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