Final - Regional Neuroanatomy Part 3 Flashcards
Name all twelve cranial nerves in order and name what category they fall in.
What are the 5 primarily motor cranial nerves?
- III: Oculomotor
- IV: Trochlear
- VI: Abducens
- XI: Accessory
- XII: Hypoglossal
3,4,6,11,12
What primarily motor cranial nerve provides innervation to the superior oblique of the eye?
A. trochlear
B. oculomotor
C. abducent
D. optic
A. Trochlear (CN IV)
moves eyeball up and down
There are 6 muscles that control the eyeballs. How many of those muscles does the CN III (oculomotor) control?
What about CN IV (trochlear)?
CN VI (abducens)?
CN III (oculomotor) - 4 muscles
CN IV (Trochlear) - superior oblique; up and down eyeball movement
CN VI (abducent) - lateral rectus; side to side eyeball movement
What cranial nerve provides innervation to the lateral rectus of the eyeball?
A. oculomotor (III)
B. trochlear (IV)
C. abducens (VI)
D. optic (II)
C. Abducens (CN VI)
moves Eyeball side to side
What muscles does CN XI (accessory nerve) provide motor innervation for? select 2.
A. deltoid
B. rhomboid
C. sternocleidomastoid
D. pectoris major
E. trapezius
C. Sternocleidomastoid
E. Trapezius
What part of the mouth does CN XII (hypoglossal nerve) provide motor innervation? select 2
A. posterior 2/3 of tongue
B. floor of mouth
C. anterior 2/3 of tongue
D. roof of mouth
E. tongue
B. Floor of mouth
E. Tongue
What are the 3 pure sensory cranial nerves (specialized signal transduction)?
- I: Olfactory
- II: Optic
- VIII: Vestibulocochlear
1,2,8
The optic nerve (CN II) connects to the back of our eyes where the retinas are. Visual information is sensed and crossover occurs at the:
A. occipital lobe
B. visual cortex
C. optic chiasm
D. oculomotor nerve
C. optic chiasm
things seen on left, usually get processed on right side of brain & vice versa (at occipital lobe)
What has second-order sensory neurons that descend through the cribriform plate and into the nasal cavity?
A. optic nerve
B. oflactory bulb
C. oculomotor nerve
D. trochlear bulb
B. Olfactory Bulb
i just rmbr him saying first semester this is where coke is sensed lol
where is the olfactory nerve processed?
A. temporal lobe
B. auditory cortex
C. frontal cortex
D. visual cortex
C. frontal cortex
this is also where memories are stored so that’s why you can associate smells with memories.. :)
What is another term for the occipital lobe?
- Visual Cortex
What is the name for the set of 3 loops in different planes which is innervated by the vestibulocochlear nerve (CN VIII)?
A. cochlea
B. vestibular organ
C. tympanic membrane
D. external auditory meatus
B. vestibular organ
helps us with coordination and response to change in environment
The 3 bones that make up the cochlea and are connected to the tympanic membrane (eardrum) are:
A. malleus
B. temporal bone
C. inferior nasal concha
D. incus
E. stapes
F. maxilla
A. Malleus
D. Incus
E. Stapes
Vibrations travel through the tympanic membrane and cause the 3 tiny bones to rattle. This movement is then sensed by the __ and turned into information about what we hear.
A. malleus
B. outer ear
C. cochlea
D. styloid process
C. Cochlea
and processed by temporal lobe aka auditory cortex…
that’s why our 3 middle ear bones and tympanic membrane are in temporal bone
What are the 4 mixed (sensory and motor) cranial nerves?
- V: Trigeminal
- VII: Facial
- IX: Glossopharyngeal
- X: Vagus
5,7,9,10
What are the sensory and motor function of the cranial nerve V (trigeminal)? Select 2.
A. sensory for front of head
B. facial expressions
C. sensory for back of head
D. chewing
E. raising eyebrows
A. Sensory for front of the head
D. Chewing (motor)