Section 2 The Cranial Nerves(???)

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Section 2 The Cranial Nerves(???)

• I. Olfactory n. (???)
• II. Optic n. (???)
• III. Oculomotor n.
• (????)
• IV. Trochlear n. (????)
• V. Trigeminal n. (????)
• VI. Abducent n. (???)
• VII. Facial n. (???)

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The Cranial Nerves

• VIII. Vestibulocochlear n.
• (?????) (????)
• IX. Glossopharyngeal n.
• (????)
• X. Vagus n. (????)
• XI. Accessory n. (???)
• XII. Hypoglossal n. (????)

???????,???????,???????, ?.?,??????
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Introduction

• A. Classification of the Cranial Nerves
• 1. Sensory nerves (????)
• I, II, VIII.
• 2. Motor nerves (????)
• III, IV, VI, XI, XII.
• 3. Mixed nerves (????)
• V, VII, IX, X.

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Introduction

• B. Components of the Cranial Nerves
• 1. Sensory (afferent) fibers
• ??(??) ??
• ? 1) general somatic sensory fiber (GSA)
  (????????)
• skin nerve endings (??????) muscle spindles
  (??)

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Introduction

• ? 2) special somatic sensory fiber (SSA)
  (????????) visual (?), hearing (?),
• balance organs (??)

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Introduction

• ? 3) general visceral sensory fiber (GVA)
  (????????)
• all viscera (????)
• ? 4) special visceral sensory fiber (SVA)
  (????????)
• olfactory (??) and taste (??)

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Introduction

• 2. Motor (efferent) fibers
• ?? (??)??
• ? 1) general somatic motor fiber (GSE)
  (????????)
• muscles of the eye and tongue (??????)

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Introduction

• ? 2) general visceral motor fiber (GVE)
  (????????)
• smooth mm. (???), cardiac mm. (??), glands
  (??)

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Introduction

• ? 3) special visceral motor fiber (SVE) (??????)
  
• skeletal muscles derive from branchial arch
  (????????)
• I ?? ? ???
• II ?? ? ??
• III-VII ?? ? ???,
• ?????,???

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I. The Olfactory Nerve (???)SVA
olfactory cells (???) within the olfactory
epithelium of nasal cavity (????????)
olfactory bulb (??)

• 
  
  
• anosmia ????, hyposmia ????

olfactory filaments (I) (??)
cribriform foramina
anosmia ????
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? II. The Optic Nerve (???) SSA
rod cells (????) cone cells (????)
optic chiasma (???)
ganglionic cells (???)
bipolar cells (????)
II
optic canal (????)
total blindness ??
photoreceptor cells (????)
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? ?. The Oculomotor Nerve (????) GSE, GVE
superior rectus levator palpebrae
superioris (???,????)
midbrain (??) ???
III superior branch(??)
III inferior branch(??)
inferior rectus medial rectus inferior
oblique (???,???,???)
sup. orbital fissure (???)
sphincter pupil, ciliary m. (?????,???)
strabismus ??
????, ???? , ??????, ??
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? ?. The Oculomotor Nerve (????) GSE, GVE
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? ?. The Trochlear Nerve (????) GSE
midbrain (??) ??

sup. orbital fissure(???)
superior oblique (???)
IV
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? ?. The Trigeminal Nerve (????) GSA, SVE
lacrim n(??)
lacrimal gland(??)
frontal (?) n
????
??
V ganglion (??? ??)
?????
ophthalmic n (???)
nasociliary(??) n
??,?,??,??
pons (??)
infraorbital(??) n
?????
V
maxillary n (????)
Zygomatic n.(???)
????
sup.alveolar(???) n
??,??
mandibular nerve (??n)
auriculotemporal n
????
buccal (?) n
????,??
VII
lingual (?) n
?? 2/3 ????
Taste.??2/3??
trigeminal neuralgia ????? trigeminal nerve
block ??????
???
inf. alveolar n
mental ?n
????
lower teeth??,??
?????N
mastic.mm.???
masticat. brs(????)
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? ?. The Trigeminal Nerve (????) GSA,
SVE
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? ?. The Trigeminal Nerve (????) GSA,
SVE
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? ?. The Trigeminal Nerve (????) GSA,
SVE
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? ?. The Abducent Nerve (???) GSE
sup. orbital fissure(???)
pons (??)
lateral rectus (???)
VI
strabismus ?? diplepia (double vision) ??
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? VII. The Facial Nerve (???)SVE, SVA, GSA, GVE
V1 lacrimal n
pons (??) ???
geniculate ganglion (????)
lacrimal gland nasal glands palatine
glands (?,??,??)
pterygo- palatine ganglion
greater petrosal n (????)
?,??N
VII
VII
stapedius (???)
stapedial n (?????)
taste of anterior 2/3 of tongue (????)
facial paralysis ???? facial spasm ???
lingual n(???)
tympanic chord(??)
temporal branches (??)
submandibular gland, sublingual gland (????,???)
zygomatic branches (??)
buccal branches (??)
marginal mandibul. br(???)
facial mm. (??)
cervical branch (??)
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? VII. The Facial Nerve (???) SVE,
SVA, GSA, GVE
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? VII. The Facial Nerve (???) SVE,
SVA, GSA, GVE
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? ?. The Vestibulocochlear Nerve (?????) SSA
macullae of saccule(???) macullae of
utricle(??) ampullary crest(???)
brain stem (??) ?????
vestibular ganglion (?????)
vestibular n. (????)
???
cochlear n. (???)
spiral ganglion (?????)
??
spiral organs (???)
Int.acous. meatus pore (???,???)

• nervous deafness
• ?????

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? ?. The Vestibulocochlear Nerve (?????)
SSA
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? ?. The Glossopharyngeal Nerve (????)
medulla oblongata (??)

• SVE, GVE, SVA, GVA,GSA

IX
sup. ganglion
otic gang
parotid gland(??)
inf. ganglion
tympanic n(??)
carotid sinus branch
carotid sinus glomus
post. 1/3 of tongue (taste
other sensory)
lingual br (??)
pharynx
pharyngeal mm.
pharyngeal branch(??)
stylopharyngeal br (?????)
stylopharyn.(????)
palantine tonsil(????)
tonsillar br.(????)
post.auricular br(???)
post. auricul. skin(????)
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? ?. The Glossopharyngeal Nerve (????) SVE, GVE,
SVA, GVA,GSA
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? ?. The Vagus Nerve (????) SVE, GVE, GVA,GSA
medulla oblongata
X L R
sup. ganglion
cricothyroideus(???)
????,???
ext.br.(??)
sup.laryng.n(??N)
int.br.(??)
laryn.mucosa(???)
inf. ganglion
phary.br.(??)
phary.mm(??)
mucosa(??)
sup.cerv.card.br.(????)
cardiac plexus (??)
heart mm (??)
sense
inf.cerv.card.br.(????)
trac. br(???)
???,?
mucosa(??)
rec.laryng. n.(??N)
esoph.br(???)
???,?
mucosa(??)
inf.laryng.n(??N)
laryng.mm??
mucosa(??)
bronc.br.(????)
pulmonary plx
????,?
mucosa(??)
esophag.br.(???)
esoph. plx
???,?
mucosa(??)
hepat.br.(??)
hepat. plx
??,?
sens
ant.vagal tr.(??)
ant.gast.br(???)
gast. plx
sens
??,?
post.vagal tr.(??)
post.gast.br(???)
gast. plx
sens
??,?
celiac br.(???)
celiac plx
sens
??,?
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? ?. The Vagus Nerve (????) SVE, GVE, GVA,GSA
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? XI. The Accessory Nerve (???) SVE
medulla oblongata (??)
pharyngeal mm. laryngeal mm(???)
X
cranial root (??)
spinal cord (??)
spinal root(??)XI
sterno-cleido-mastoideus (?????) trapezius(???)

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XII. The Hypoglossal Nerve(????) GSE
medulla oblongata (??)
paralysis of tongue mm. ???? (????????)
XII
hypo- glossal canal ?? ???
mm of tongue (??)
lingual branches(??)
descending br(??)
ansa cervicalis (??)
infrahyoid mm (?????)
cervical plexus (??)