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Anatomy Exam 2 > Cranial Nerves > Flashcards

Cranial Nerves Flashcards

1
Q

What canal does the optic nerve enter?

A

Optic canal

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2
Q

Does the optic nerve (CNII) have any branches?

A

No

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3
Q

What is the function of CN II, Optic Nerve?

A

Retina, vision

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4
Q

What is the fiber type in the optic nerve?

A

Special sensory

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5
Q

What foramen does the oculomotor nerve (CN III) enter?

A

Superior orbital fissure

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6
Q

Does the oculomotor CN III have any branches?

A

Yes, two:

1) Superior branch
2) Inferior Branch

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7
Q

What are the general somatic functions of oculomotor nerver (CN III)?

A

1) Superior Rectus
2) Levator palpebrae superioris
3) Medial rectus
4) Inferior rectus
5) inferior oblique

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8
Q

What are the parasympathetic functions of the oculomotor nerve?

A

1) Sphincter pupillae
2) Ciliary muscle

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9
Q

What foramen does the trochlear nerve enter?

A

superior orbital fissure

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10
Q

Does trochlear nerve (CN IV) have any branches?

A

Yes, muscular branch

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11
Q

What if the function of trochlear?

A

General somatic motor:

1) Superior oblique

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12
Q

What foramen do the three branches of trigeminal exit?

A

V1 (opthlamic): Sup orbital fissure

V2 (maxillary): foramen rotundum

V3 (mandibular): foramen ovale

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13
Q

What are the three branches off trigeminal?

A

V1: opthalmic

V2: maxillary

V3: mandibular

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14
Q

What are the four branches of of opthalmic (V1)?

(branch off Trigeminal CN V)

A

1) Meningeal
2) Frontal
3) Lacrimal
4) nasociliary

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15
Q

What are the six branches of of V2 maxillary?

(Branch of of Trigeminal CN V)

A

1) Meningeal
2) Infraorbital
3) Post/ant superior alveolar
4) Zygomatic
5) Sensory roots to pterygopalatine ganglio
6) Greater/lesser palatine

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16
Q

What are the 5 branches of of V3 Mandibular?

(A branch off of Trigeminal CN V)

A

1) Meningeal
2) Auriculotemporal
3) Buccal
4) Lingual
5) Inferior alveolar

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17
Q

What are the functions of V1- opthlamic? (Sensory)

(A branch of Trigeminal CN V)

A

1) Meninges
2) Orbit-cornea conjuctiva
3) Nasla cavity lining
4) Forehead
5) middle nose
6) frontal air sinuses

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18
Q

What are the functions of V2- maxillary (Sensory)?

(A branch of of Trigeminal CN V)

A

1) meninges
2) maxillary air sinus
3) gums/teeth of upper jaw
4) bony part of cheek

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19
Q

What are the functions of Mandibular (V3) (sensory)?

(A branch off of Trigeminal CN V)

A

1) Meninges
2) Mucosa of oral cavity/palate
3) Ant 2/3 of tongue (general)
4) Gums/teeth of lower jaw
5) Soft part of cheek/mandible

20
Q

What are the functions of V3 mandibular (motor)?

(A branch off of CN V Trigeminal)

A

1) Masseter
2) Buccinator
3) Lateral pterygoid
4) Medial pterygoid
5) tensor tympani
6) tensor palatini
7) mylohyoid
8) ant belly of digastric

21
Q

What foramen does abducens (CN VI) enter?

A

Superior orbital fissure

22
Q

What is the function of Abducens CN VI?

A

General Somatic motor:

1) lateral rectus

23
Q

Does abducens CN VI have any branches?

A

No

24
Q

What foramen does Facial nerve (CN VII) exit?

A

Internal acoustic meatus

25
Q

What are the four fiber types in facial nerve (CN VII)?

A

Special Sensory

General sensory

Branchiomotor

Parasympathetic motor

26
Q

What are the three functions of the branchiomotor branch of Facial nerve (CN VII)?

A

1) Muscles of facial expression
2) Post belly of digastric
3) Stylohyoid

27
Q

What is the special sensory function of facial nerve (CN VII)?

A

Taste ant 2/3 of tongue

28
Q

What is the general sensory function of Facial nerve (CN VII)?

A

1) Skin of auricle
2) skin of small area behind ear

29
Q

What is the parasympathetic function of facial nerve (CN VII)?

A

1) Lacrimal gland
2) submandibular gland
3) Sublingual gland
4) mucous membranes of nasopharynx, hard and soft palate

30
Q

What foramen does vestibulocochlear exit?

A

Internal acoustic meatus

31
Q

What is the special sensory function of vestibulocochlear?

A

Special sensory:

1) hearing
2) balance

32
Q

Does vestibulocochlear have any branches?

A

no

33
Q

What nerve innervates nasal cavity with afferent sensory fibers?

A

Olfactory CN I

34
Q

What nerve sends afferent sensory fibers to the eye?

A

Opti CN II

35
Q

What nerve sens efferent motor branches to the ciliary muscle, sphincter pupillae, and all external eye muscles except two

A

CN III, Oculomotor

36
Q

What nerve sens efferent motor fibers to the superior oblique muscle?

A

Trochlear CN IV

37
Q

What nerve sends efferent motor fibers to later rectus?

A

Abducent CN VI

38
Q

What nerve sends afferent sensory fibers to the face, sinuses, teeth, orbit and oral cavities, dura matter

ANd sends efferent motor fibers to muscles of mastication: tensor tympani, tensor veli palatini, mylohyoid, anterior belly of digastric

A

Trigemina CN V

39
Q

What nerve

A
40
Q

What nerve sends efferent motor fibers to muscles of face, stapedius, posteior belly of digastric, stylohyoid, occipitalis, auricular muscles?

Motor- submadibular, subligual, lacrimal glands

taste-anterior 2/3 of tonuge, sensory soft palate

A

Facial CN VII

41
Q

What nerve sends afferent sensory fibers to cochlea and vestibule?

A

Vestibulocochlear CN VIII

42
Q

What are the strap muscles innervated by?

A

C1, 2, 3 spinal nerve fibers

43
Q

What nerve does taste of posterior 1/3 of tonuge

sensory- tonsil, pharynx, middle ear

motor-stylopharyngeus, parotid gland

A

CN IX, Glossopharyngeal

44
Q

What nerve sends motor fibers to sternocleidomastoid, and trapezius?

A

Accessory CN XI

45
Q

What nerve sends motor innervation to tongue muscles?

A

Hypoglossal CN XII

Anatomy Exam 2 (18 decks)

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