Cranial Nerves Flashcards
What is Mnemonic device for remembering the order of the cranial nerves
Oh-olfactory Oh-optic Oh-oculomotor To-trochlear Touch-trigeminal And-abducens Feel-facial Virgin-vestibulocochlear Girls-glossopharyngeal Vagina-vagus Ah- accessory Heaven - hypoglossal
What is Mnemonic device for remembering if the cranial nerve is mostly sensory, motor, or both
Some=1 Say=2 Marry=3 Money=4 But =5 My=6 Brother=7 Says=8 Big=9 Boobs=10 Matter =11 Most =12
Drawing that helps name/identify the function of the cranial nerves.
the face
What are the cranial nerves that ONLY contain sensory neurons
Cranial nerve 1 and 2=olfactory, and optic
What cranial nerve is so predominantly sensory that its motor function is often overlooked
Cranial nerve 8 =vestibulocochlear
What 2 cranial nerves ONLY innervate a single muscle and why is different from the other motor cranial nerves
Cranial nerve 4 and 6 = Trochlear and Abducens
All other motor cranial nerves innervate more than 1 muscle
What cranial motor neurons have autonomic motor axons
Cranial nerves 3,7,9,10 oculomotor, facial, glossopharyngeal and vagus
all are part of the parasympathetic division
What is the fxn and name of cranial nerve 1
olfactory= sense of smell
Are the olfactory bulb and olfactory tract part of cranial nerve 1
No
What is the fxn and name of cranial nerve 2
optic=vision
do not confuse optic nerve vs optic tract and optic chiasma
What is the fxn and name of cranial nerve 3
oculomotor= intrinsic eye movement
(LR6SO4)3= lateral rectus controlled by cranial nerve 6, superior oblique controlled by cranial nerve 4, all other eye movement controlled by cranial nerve 3
What is the fxn and name of cranial nerve 4
Trochlear= move the eyeball inferiorly and laterally (up and to the side)
named after trochlea a pulley like loop the tendon of the superior oblique pass through
(LR6SO4)3= lateral rectus controlled by cranial nerve 6, superior oblique controlled by cranial nerve 4, all other eye movement controlled by cranial nerve 3
What is the fxn and name of cranial nerve 5
Trigeminal
- sensory= neurons to face, head, and anterior 2/3 of tongue
- somatic motor= neurons for chewing
True or false the trigeminal nerve is the largest cranial nerve
True
The smaller root of the trigeminal nerve controls what
mastication
What are the 3 branches of the larger sensory root of the trigeminal nerve
V1= ophthalmic nerve
V2= maxillary nerve
V3= mandibular nerve
Where is a common place for local anesthetic to be administered by dentist and physicians for the maxilla
V2 of the large root of the trigeminal nerve
What is the fxn and name of cranial nerve 6
Abducens
moves the eye on the oblique (abduction)
(LR6SO4)3= lateral rectus controlled by cranial nerve 6, superior oblique controlled by cranial nerve 4, all other eye movement controlled by cranial nerve 3
b
h
What is the fxn and name of cranial nerve 7
Facial
- somatic motor= facial expressions
- parasympathetic motor= lacrimal glands, nasal gland, and saliva gland (sublingual and sub mandibular)
- sensory= taste of anterior 2/3 of tongue
What are the 5 branches of the facial cranial nerve
- Temporal =The
- Zygomatic=Zoo
- Buccal= Bought
- Mandibular=More
- Cervical= Camels
What is the fxn and name of cranial nerve 8
Vestibulocochlear
Fxn= balance and hearing
What are the 2 branches of the Vestibulocochlear
cranial nerve and there fxn
Vestibular branch=carries impulses for equilibrium
Cochlear branch= carries impulses for hearing
What is the fxn and name of cranial nerve 9
Glossopharyngeal
taste, salivation, innervation of pharynx
- sensory= posterior 1/3 taste buds, baroreceptors of carotid sinus. chemoreceptor of carotid bodies
- parasympathetic motor=parotid gland
What is the fxn and name of cranial nerve 10
Vagus
swallowing, talking, cardiac, GI tract, respiration, taste
What is the longest cranial nerve
the vagus nerve
What is the fxn and name of cranial nerve 11
Accessory
pharnx and larynx muscles for swallowing and neck and shoulder movement
True or False the Accessory cranial nerve(11) only originates from the brain
False it originates from the brain and brain stem
What is the fxn and name of cranial nerve 12
Hypoglossal
Tongue movement
innervates all intrinsic muscle of the tongue and all extrinsic muscles of the tongue except the palatoglossus
How is the hypoglossal nerve assessed
Protrusion of the tongue, if it deviates one way or the other one of the genioglossus muscle is diseased
the tongue deviates toward the side of the inactive muscle
What is the only cranial nerve that arises from the posterior aspect of the brain stem
cranial nerve 4, trochlear
