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Chapter 13 Part 4
Cranial Nerves
27
Anatomy
Undergraduate 2
04/29/2009

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Term
What are the 4 types of mixed nerves?
Definition
somatic (voluntary)afferent, somatic efferent, visceral (automatic, involuntary) afferent, and visceral efferent
Term
Does the Olfactory cranial nerve I have a sensory function? If so what it is?
Definition
Yes; smell
Term
Does the Optic cranial II nerve have a sensory function? If so what it is?
Definition
Yes; vision
Term
Does the Oculomotor cranial nerve III have a sensory function? If so what it is?
Definition
No
Term
Does the Trochlear cranial nerve IV have a sensory function? If so what it is?
Definition
No
Term
Does the Trigeminal cranial nerve V have a sensory function? If so what it is?
Definition
Yes; general sensation
Term
Does the Abducens cranial nerve VI have a sensory function? If so what it is?
Definition
No
Term
Does the Facial cranial nerve VII have a sensory function? If so what it is?
Definition
Yes; hearing
Term
Does the Vestibulocochlear cranial nerve VIII have a sensory function? If so what it is?
Definition
yes; hearing and balance
Term
Does the Glossopharyngeal cranial nerve IX have a sensory function? If so what it is?
Definition
Yes, hearing
Term
Does the Vagus cranial nerve X have a sensory function? If so what it is?
Definition
Yes; taste
Term
Does the Accessory cranial nerve XI have a sensory function? If so what it is?
Definition
No
Term
Does the Hypoglossal cranial nerve XII have a sensory function? If so what it is?
Definition
No
Term
Which cranial nerves have both sensory and motor functions?
Definition
trigeminal V, facial VII, Vestibulocochlear VIII, Glossopharyngeal IX, Vagus X
Term
The only cranial nerve that extends beyond the head and neck.
Definition
Vagus X
Term

Sensory


lateral to CN VII


sensess sound, rotation and gravity (essential for balance and movement); Located in internal acoustic canal

Definition
Vestibulocochlear VIII
Term

Sensory and Motor


Medulla


recieves taste from the posterior 1/3 of the tongue, provides secretomotor innervation to the paratiod gland, and provides motor intervation to the stylopharyngeus (essential for tactile, pain and thermal sensation)

Definition
Glossopharyngeal  IX
Term

Sensory and Motor


Posterolateral sulcus of Medulla


Supplies branchiomotor innervation to most laryneal and pharyngeal muscles; located in juglar foramen

Definition
Vagus X
Term

Motor


Cranial and spinal root at Medulla


controls muscles of the neck and overlaps with functions of the vagus

Definition
Accessory XI
Term

Motor


Medulla


provides motor innervation to the muscles of the tongue and other glossal muscles: swallowing

Located in the hypoglossal canal

Definition
Hypoglossal XII
Term

sensory


olfactory nerve to cerebrum


transmits the sense of smell; located in olfactory foramina of ethmoid

Definition
olfactory I
Term

sensory


retina of the eyeball to cerebrum


transmits visual information to the brain; located in optic canal
Definition
Optic III
Term

motor


midbrain


innervates superior oblique muscle, superior oblique muscles; located in superior orbital fissure

Definition
trochlear IV
Term

Sensory and Motor


Pons


receives sensation from the face and innervates the muscle of mastication; located in superior orbital fissure, foramen rutundum, and foramen ovale

Definition
trigeminal V
Term

Motor


posterior margin of pons


innervates the lateral rectus, for outward movement the eye-crossed eyes if there is problem; located in superior orbital fissure

Definition
abducens VI
Term

Sensory and Motor


pons above olive


provides motor innervation to the muscles of facial expression and stapedius, receives the special sense of taste from the anterior 2/3 of the tongue

Definition
facial VII
Term

motor


midbrain


3rd nerve controls eye inward movement, elevation, derpression, elevation of the eyelid and parasympathetic for the pupils; located in  the superior orbital fissure 

Definition
oculomotor III
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