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HFF - Exam 3 > Cranial Nerves - Hutch > Flashcards

Cranial Nerves - Hutch Flashcards

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1
Q

Talking about the brain proper, not the stem. What is caudal, rostral, dorsal, and ventral?

A

Caudal - Posterior
Rostral - Anterior
Dorsal - Superior
Ventral - Inferior

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2
Q

Speaking about the spinal cord, what is rostral, caudal, ventral, and dorsal?

A

Rostral - Superior
Caudal - Inferior
Ventral - Anterior
Dorsal - Posterior

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3
Q

What is the cranial nerve mnemonic you know?

A

SSMMBMBSBBMM
OOOTTAFVGVAH
O
M
M
Crib, Optic, SOF, SOF, SOF, SOF, IAM, IAM, JUG, JUG, JUG (mag), Hypo
Round
Oval

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4
Q

What are general somatic afferents?

A

Somatic sensation from skin and striated muscle (Temp, touch, general body sensations)

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5
Q

What are general visceral afferents?

A

Visceral sensation - deep organs (viscera and blood vessels)

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6
Q

What are general visceral efferents?

A

Visceromotor - Smooth muscle of the viscera, heart, salivary glands, etc.

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7
Q

What are general somatic efferents?

A

Somatomotor function - Motor to striated muscles

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8
Q

What are special somatic afferents?

A

Impulses from retina, auditory, and vestibular apparatuses

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9
Q

What are special visceral afferents?

A

Impulses from taste buds and olfactory mucosa

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10
Q

What are special visceral efferents?

A

Branchial motor - innervate striated muscles from branchial arches

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11
Q

CN I is part of the what? (Developmentally)

A

Telencephalon

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12
Q

CN II is part of what? (Developmentally)

A

Diencephalon

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13
Q

What happens at the optic chiasm?

A

Some optic fibers cross, and others do not.

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14
Q

Where does CN I exit the skull?

A

Cribiform foramina

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15
Q

Where does CN II leave the skull?

A

Optic canal

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16
Q

CN III, IV, and VI can be lumped together as what?

A

Nn. that control ocular muscles.

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17
Q

CN III is what nerve?

A

Oculomotor

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18
Q

CN III controls what muscles?

A

All ocular except lat rectus and sup oblique

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19
Q

CN IV is what nerve?

A

Trochlear n.

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20
Q

What does CN IV control?

A

Motor to sup oblique

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21
Q

What is special about CN IV?

A

Only CN that emerges dorsally. All others are ventral

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22
Q

What is CN VI?

A

Abducens n.

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23
Q

What does CN VI control?

A

Motor to lat rectus

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24
Q

List the muscles that CN III is somatic motor to.

A 
Sup rectus
Inf rectus
Med rectus
Inf oblique
Levator palpebrae superioris
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25
List the muscles that CN III is visceral motor to.
Pupillary sphincter | Ciliary m.
26
Where does CN III exit the skull?
SOF
27
What does CN IV somatic motor control?
Sup oblique
28
What is special about CN IV’s nuclei?
They sit contralaterally while all the other CN’s sit ipsilaterally
29
The lateral rectus muscle does what and what innervates it?
Abducts the eyeball | CN VI
30
CN V is what nerve?
Trigeminal
31
What are the 3 main branches off of CN V?
V1 - Opthalamic V2 - Maxillary V3 - Mandibular
32
CN V as a whole innervates what?
``` Muscles of mastication Oral floor muscles Tensor tympani (mid ear) Tensor veli palatini (pharyngeal) Sensation of the face, forehead, tongue ```
33
Most of the cranial dura mater is innervated (sensory) by what?
Opthalamic n.
34
The nasal mucosa is sensory innervated by what?
Maxillary
35
The ant 2/3 of tongue (sensory) is innervated by what?
Mandibular
36
What are the main muscles of mastication? (4)
Temporalis Masseter Med pterygoid Lat pterygoid
37
V1 exits the skull where?
SOF
38
V1 is what to the lacrimal gland?
Sensory only
39
What is visceral motor to lacrimal gland?
Facial
40
What branches off V1? (4) TNFL
Tentorial n. Nasociliary n. Frontal n. Lacrimal n.
41
V2 exits the skull where?
Foramen rotundum and then thru the pterygopalatine fossa
42
What branches off V2 from sup to inf? 3SAZI
``` Zygomatic n. Infraorbital n. Ant sup alveolar n. Middle sup alveolar n. Post sup alveolar n. ```
43
What is special about the zygomatic nerve?
This is where VII hitch-hikes - greater pertrosal n.
44
V3 exits the skull where?
Foramen ovale
45
What branches off V3? (7) BADMILP
``` Auriculotemporal n. Buccal n. Masseteric branches Deep temporal branch Pterygoid branches Inf alveolar n. (branches into mental n.) Lingual n. ```
46
The lingual n. runs where?
Medial to the mandible
47
The lingual n. does what?
General sensory of mucosa 2/3 tongue and floor of mouth
48
What runs with lingual nerve?
Chorda tympani - branch of CN VII - Taste sensation ant 2/3 of tongue **Also innervates submand, sublingual, and smaller glands
49
The inferior alveolar n. enters what?
Mandibular foramen
50
What is V3 motor to?
Mylohyoid | Ant belly of digastric
51
What is V3 sensory to?
Pulp of teeth | Mental n. - skin and lip
52
What is CN VII?
Facial nerve
53
Where does CN VII exit the skull?
IAM
54
What other CN exits IAM?
CN VIII
55
When does VII start to branch?
After it goes thru stylomastoid foramen
56
What are the 5 branches and 3 other branches of CN VII? TZBMC - PPS
``` Temporal Zygomatic Buccal Mandibular Cervical ``` (Do the hand thing on face, thumb is temporal) Post auricular n. Post digastric m. Stylohyoid m.
57
What is motor to Anterior digastric?
CN V
58
What innervates facial skin sensation?
CN V
59
What does sensation from lacrimal gland?
CN V
60
What nerve is a branch of CN VII that is motor to lacrimal and nasal glands, and what does it hitchhike with?
Greater petrosal n. | V2 (Zygomatic)
61
What branch of the CN VII innervates submandibular and sublingual glands and does taste to ant 2/3 of tongue and what does it hitchhike with?
Chorda tympani n. | V3 (Lingual n.)
62
What does the chorda tympani n. run thru?
Petrotympanic fissure
63
What branch of CN VII innervates the stapedius m.?
Nerve to stapedius
64
Branches that innervate stylohyoid and post belly of digastric come from what CN?
CN VII
65
The facial nerve innervates all glands except for what large one?
Parotid gland - the one it runs thru
66
In summary, CN VII is motor to what? Innervates all but what gland? Is notorious for doing what to other nerves?
Muscles of expression Parotid Hitchhiking
67
What is CN VIII?
Vestibulocochlear n.
68
What does the CN VIII do?
Vestibular senses | Sense of hearing
69
Where does CN VIII exit the skull?
IAM
70
CN IX is what?
Glossopharyngeal n.
71
Where does IX exit the skull?
Jugular foramen
72
CN IX does a lot. Tell me the motor functions. (3 things)
Pharyngeal constrictors Stylopharyngeus Parotid gland
73
CN IX does a lot. Tell me the sensory functions. (5 things)
``` Post tongue Post oral pharynx Mucosa of middle ear Skin of external ear and canal Tympanic membrane ```
74
CN IX does a lot. Tell me the special sensory functions. (2)
Taste to post 1/3 of tongue | Chemo and baroreceptors to carotid sinus
75
The lesser petrosal n. hitchhikes w/ what n. to get to the parotid gland?
Auriculotemporal n. (Branch of V3)
76
CN X is what nerve?
VAGUS
77
CN X is sensory to what? (5)
``` Viscera in abdomen and thorax Laryngopharynx and larynx Taste - epiglottis Ear and ext acoustic meatus Dura of post cranial fossa ```
78
CN X is motor to what?
``` Pharyngeal constrictors (also CN IX) Laryngeal muscles ```
79
What are 2 special senses of CN X?
Pressure receptors - aortic arch Chemoreceptors - aortic body
80
CN XI is what?
Spinal accessory n.
81
What two muscles does CN XI innervate?
Trapezius | SCM
82
What fascial layer are the trapezius and SCM in?
Investing fascia
83
What is unique about CN XI?
It ascends cord and enters into the skull via foramen magnum. It then exits the skull with CN X via the jugular foramen.
84
What exits out of the skull via the jugular foramen?
CNs IX, X, XI
85
What is CN XII?
Hypoglossal n.
86
What does CN XII do?
Motor to tongue muscles
87
Where does CN XII exit the skull?
Hypoglossal canal
88
CN VII saying?
Closes your eye - CN VII proper - IAM thru stylomastoid foramen - Branches TZBMC Tastes pie (special taste sense ant 2/3) - Chorda tympani - IAM thru petrotympanic fissure Makes you cry - Greater petrosal nerve - IAM thru base of skull - hitchhikes with V1 and V2 to get to lacrimal gland Innervates all glands, except for the one it goes thru, the parotid gland

HFF - Exam 3 (19 decks)

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