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Dental Science > Cranial Nerves MINI EXAM 2 > Flashcards

Cranial Nerves MINI EXAM 2 Flashcards

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1
Q

carries information from muscles, tissue and
organs, to the CNS
1. Afferent (sensory)
2. Efferent (motor)

A

Afferent sensory

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2
Q

(Kinesthetic sense)
—
Sensations of body position and movement
— Sensory or afferent impulses sent back to brain
— Functions to relay to brain body position, create smooth movements during
chewing or speech (TMJ and muscles of mastication), and intercuspation of teeth (PDL)

A

Proprioception

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3
Q

carries information away from the CNS to muscles,

glands and organs

A

Efferent Motor

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4
Q

carries both sensory and motor impulses

A

Mixed sensory and motor

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5
Q

Regulates functions over which we have no control

  1. Somatic
  2. autonomic
A

autonomic

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6
Q

fight or flight

— Dilates eyes for better vision — Dry mouth

A

Sympathetic

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7
Q

vegetative system, or rest and digest
— Digestion of food which activates salivary glands — Dilation of blood vessels to allow daily activity — Cranial nerves III, VII, IX and X

A

Parasympathetic

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8
Q

2 divisions of autonomic nervous system

A

parasympathetic and sympathetic

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9
Q

Sensory: sensation of smell from nasal cavity

back to the CNS

A

Olfactory Nerve

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10
Q

sensation of sight from retina back to

CNS

A

Optic Nerve

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11
Q

Motor: supplies motor innervation to 4 of the 6 muscles that move the eyeball Parasympathetic: adjusts lens for close vision and constricts pupils

A

Oculomtor nerve

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12
Q

Motor: innervation to 1 of the 6 muscles that

move the eyeball

A

Trochlear Nerve

and Abducens

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13
Q

Sensory: Taste to anterior 2/3 tongue Motor: Muscles of facial expression (Bell’s Palsy), stylohyoid, post belly of the digastric Parasympathetic: (rest and digest) -Lacrimal gland (via zygomatic and lacrimal nerves) -Minor salivary glands (via greater petrosal) -Submandibular gland -Sublingual gland

A

Facial

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14
Q

A patient has Bell’s Palsy… what nerve was this related too

A

Facial

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15
Q

Sensory: transmits sensations of balance and

hearing back to CNS

A

Vestibulocochlear

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16
Q

Se nsory: General sensation and taste to posterior 1/3 of tongue Motor: Stylopharyngeal muscle Parasympathetic: parotid gland

A

Glossopharyngeal

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17
Q

Se nsory: Taste from epiglottis (posterior portion of tongue) Motor: most of the muscles of:
¨ Pharynx
¨Larynx
¨Soft palate Parasympathetic: cardiac muscle, many glands of the body (thymus)

A

Vagus

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18
Q

Motor: Trapezius muscle, sternocleidomastoid

muscle, muscles of soft palate and pharynx

A

Accessory

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19
Q

Motor: Extrinsic and Intrinsic tongue muscles

A

Hypoglossal

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20
Q

Primary sensation nerve

  1. Trigeminal CNV
  2. Occulomotor
A

Trigeminal

21
Q

Largest and most complex of CNs

A

Trigeminal Nerve

22
Q

Trigeminal Nerve:Sensory originates from the __, traverses
through the trigeminal ganglion
(semilunar or Gasserian ) which is located
near the foramen lacerum on the petrous
portion of the temporal bone

A

pons

23
Q

Trigeminal V nerve splits into 3 branches. What are they and what is there Motor or sensory or mixed

A

V1 : Opthalmic-sensory
V2: Maxillary: sensory
V3: Mandibular-mixed

24
Q

Exits the skull via superior orbital fissur is a large division of trigeminal branch

A

Opthalmic Nerve

25
Q 
— Serves:
— Ethmoid and frontal sinuses
— Conjunctiva
— Cornea
— Skin on forehead
— Skin and bridge of nose
— Ala and apex of nose
— Anterior scalp
— Nasal cavity
— Eyelids
— Eyeball
— Orbit
— Lacrimal gland
A

V1 Opthalmic

26
Q

V1 Opthalmic Nerve splits into what 3 major branches

A

Frontal
Lacrimal
Nasociliary

27
Q

Passes through the skull via foramen

rotundum of sphenoid which V division

A

Maxillary Division

28
Q

Maxillary division V2 is

a. sensory
b. mixed
c. motor

A

sensory!

29
Q

V2 maxillary division divdes into 5 large branches?

A

Zygomatic nerve — Infraorbital nerve —

P. S . A . n e r v e — Greater and lesser palatine nerve — Nasopalatine nerve

30
Q

Travels through inferior orbital

fissure

A

Zygotmatic Nerve V2

31
Q

V2 zygomatic nerve
Exists the orbit and divides into
two branches:

A

— Zygomaticofacial-sensory for the skin
of cheeks — Zygomaticotemporal-sensory for the
skin on the temples

32
Q

Travels through inferior orbital fissure

A

V2 Infraorbital nerve

33
Q

V2 Infraorbital nerve divides into 3 branches

A 
Travel through maxillary sinuses
ASA
MSA
one that travels through infraorbital foramen
Infraorbital nerve
34
Q

— Maxillary sinuses
— Maxillary anterior teeth
— Supporting structures such as alveolar bone, PDL and labial gingiva
— This may cross over the midline

is it ASA, MSA or Infraorbital nerve

A

ASA

35
Q

— Maxillary sinuses
— Maxillary premolars
— MB root of maxillary 1st molar
— Supporting structures such as alveolar bone, PDL, and buccal gingiva
— This nerve is missing in about 28%, mainly the A.S.A. usually takes over

is it ASA, MSA or Infraorbital nerve

A

MSA

36
Q

— Upper lip — Medial portion of cheek — Lower eyelid — Side of the nose

A

Infraorbital nerve

37
Q

MB root of 1st molar)

A

MSA of the V2 infraorbital nerve

38
Q

— Sensory impulses from:
— Maxillary sinuses mucous membrane
— Maxillary molars (except MB root of 1st molar)
— Supporting structures such as alveolar bone, PDL, and buccal gingiva

A

PSA

39
Q

What bony landmakr is in the way during a PSA

A

Zygomatic process

40
Q

We never anesthetize the lesser palatine on purpose!

because??

A

anesthetizes soft palate and tonsils….

41
Q 
emerges
through the lesser palatine
foramen and travels posteriorly
to innervate:
— Soft palate
— Palatine tonsil
A

lesser palatine

42
Q 
posterior teeth
We never anesthetize the lesser palatine on purpose!
— Greater palatine nerve-
em erges through the greater
palatine foramen and travels
anteriorly to innervate:
— Posterior hard palate
— Lingual gingiva of maxillary
A

greater palatine

43
Q

— Transmits sensory impulses for:
— Nasal septum — Anterior hard palate — Lingual gingiva of the maxillary
anterior teeth

A

V2 Nasopalatine

44
Q

Travels through the nasal cavity,
travels along the nasal septum,
through the incisive canal, and
emerges through incisive foramen

A

Nasopalatine V2

45
Q

Largest of the three trigeminal nerve branches

A

V
3
-Mandibular Nerve

46
Q

Exits skull via the foramen ovale on sphenoid

A

V
3
-Mandibular Nerve

47
Q 
V
3
-Mandibular Nerve
A nterior trunk-divided into one sensory branch and 5 motor
branches

what is the one sensory branch

A

buccal nerve
Skin of cheeks
— Buccal mucosa
— Buccal gingiva of the mandibular molars and premolars

48
Q

May serve as afferent for the mandibular 1st molar: need to consider
this if IA block fails

A

Mylohyoid

Dental Science (27 decks)

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