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H&N Anatomy Quiz 2 > Cranial Nerves I > Flashcards

Cranial Nerves I Flashcards

1
Q

They give rise to the structures of the head and neck.

A

The branchial arches aka pharyngeal arches

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2
Q

Define the branchial arches

A

Series of extremely visible anterior tissue bands that lie under the early brain in embryologic development.

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3
Q

How many arches form during development of a human and how many of those are visible on the embryo?

A

5; 4

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4
Q

What to do brachial arches give rise to?

A
  • Face
  • Tongue
  • Lips
  • Jaws
  • Palate
  • Pharynx
  • Neck CNs
  • Glands
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5
Q

CN V name and artery

A

Trigeminal, maxillary artery

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6
Q

Trigeminal artery skeletal structures:

A

Mandible, maxilla, malleus, incus.

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7
Q

CN V muscles:

A

Muscles of mastication, mylohyoid, anterior belly of digasteric.

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8
Q

Facial nerve number and artery:

A

CN VII, Stapedial artery.

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9
Q

These skeletal structures are innervated by the facial nerve:

A

Stapes, styloid process, upper part of body of hyoid.

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10
Q

Facial nerve (VII) muscles:

A

Muscles of facial expression, stapedius, stylohyoid, posterior belly of digastric.

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11
Q

Common carotid & internal carotid arteries feed this CN:

A

Glossopharyngeal (IX)

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12
Q

CN IX skeletal structures:

A

Lower part of body of hyoid.

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13
Q

CN IX name:

A

Glossopharyngeal

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14
Q

Vagus (X) nerve arteries:

A

Part of aortic arch and part of R subclavian arteries.

Also part of the L and R pulmonary arteries.

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15
Q

Thyroid and cricoid cartilages are the skeletal structures of the CN:

A

Vegus (X)

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16
Q

CN II

A

Optic Nerve

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17
Q

Optic Nerve is CN __

A

II

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18
Q

Optic nerve is surrounded by

A

meninges and CSF

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19
Q

The optic nerve exits the cranial cavity via the

A

optic canal

20
Q

The optic nerve is composed of what?

A

axons of ganglion cells that are located in the retina

21
Q

Nerves from the optic canal cross at the _____ which is located directly above the _____

A

Optic chiasm, pituitary gland

22
Q

Nasal retinal fibers will _________, while temporal retinal fibers will ______

A

cross into the opposite optic tract, remain uncrossed

23
Q

(Ant/Post) to the chiasm, the continuation of the visual signal occurs via the ______, which relay information to the _______ and ultimately the ______

A

optic tracts, lateral geniculate nucleus (LGN), visual cortex

24
Q

The optic nerve contains these kinds of fibers

A

Special Afferent (SA) fibers for vision

25
Q

The optic nerve is surrounded by what kind of nerves?

A

Ophthalmic nerves

26
Q

Optic nerve enters the globe from the _____ surface

A

Posterior

27
Q

CN III

A

Oculomotor

28
Q

Oculomotor CN ___

A

III

29
Q

The nuclei of Oculomotor nerve are located where?

A

in the midbrain

30
Q

Oculomotor nerve contains what type of nerves?

A

Motor GE and parasympathetic fibers (VE)

31
Q

The oculomotor nerve exits the cranial cavity through through

A

the superior orbital fissure

32
Q

_______ of the provide motor innervation to extraocular muscles

A

General Efferent (GE)

33
Q

Name the muscles that are innervated by general efferent fibers of oculomotor nerves

A

Superior rectus, inferior rectus, medial rectus, inferior oblique, levator palpebrae superioris

34
Q

______ fibers provide innervation to smooth muscles of the eye

A

Visceral Efferent (VE)

35
Q

Visceral efferent fibers of the oculomotor nerve are (sympathetic/parasympathetic)

A

parasympathetic

36
Q

Superior rectus, inferior rectus, medial rectus, inferior oblique, levator palpebrae superioris are innervated by what type of fibers?

A

General efferent

37
Q

Iris sphincter, ciliary muscles are innervated by what kind of fibers?

A

Visceral Efferent

38
Q

Name the muscles innervated by the oculomotor nerve

A

Superior, inferior, medial rectus

Inferior oblique and levator palpebrae superioris, irsi sphincter and ciliary muscle

39
Q

Trauma to this region can affect your sense of smell

A

cribriform plate

40
Q

Fracture of the cribriform plate can also lead to

A

cerebrospinal fluid rhinorrhea (its like diarrhea of csf through the nose)

41
Q

Which nerve is not a true nerve?

A

Olfactory nerve (CN I)

42
Q

CN I is surrounded by

A

CSF and meninges

43
Q

CN I exits the cranial cavity through

A

perforations in the cribriform plate of the ethmoid bone

44
Q

CN I contains what kind of fibers?

A

Special afferent (SA) fibers

45
Q

Anosmia is

A

absent olfaction

H&N Anatomy Quiz 2 (7 decks)

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