Cranial Nerves/Spinal Nerves Flashcards
How many spinal nerves are there?
31 spinal nerves
C1-C7 nerves exit above or below the vertebrae?
Above
All nerves other than C1-C7 exit above or below the vertebrae?
Below
Vertebral Disc herniation occurs in what direction, where?
L4-L5, L5-S1
Posteriolaterally
Cranial Nerve 5 Sensation and Motor?
Sensation:
Anterior 2/3 Tongue Sensation
Facial Sensation
Motor:
Muscles of Mastication
What are the muscles of mastication? Which one opens?
Masseter, Temporalis, Medial pterygoid, lateral pterygoid (only one that opens; Lateral Lowers)
Cranial Nerve 7 Sensation and Motor?
“Spit when your angry and drool when you smile”
Sensation:
Lacrimation, Salivation (submandibular and sublingual glands)
Motor:
Facial Movement (Smile)
Shutting down the Eyes (orbicularis oculi)
Stapedius Muscle in the ear
*Goes through partoid but does NOT innervate it
Cranial Nerve 9 Sensation and Motor?
Pharyngeal-Glossal N.
Sensation: Taste and Sensation of 1/3 of the tongue Salivation (parotid gland) Carotid Body and Sinus Motor: Stylopharyngeus (elevates pharynx and larynx) Swallowing
Cranial Nerve 10 Sensation and Motor?
Vagus N.
Viscera (abd and pulmonary), Aortic Arch/Away, Glottis, Uvula and Swallowing/Soft Palate elevation Sensation: Taste and Sensation of epiglottic Salivation (parotid gland) Aortic Arch chemo/baroreceptors Motor: Stylopharyngeus (elevates pharynx and larynx) Swallowing
Eye movement nerves?
CN3, SO4, LR6
Lateral Nuclei of Cranial Nerves are? Where do they come from?
Sensory, aLar pLate
Medial Nuclei of Cranial Nerves are? Where do they come from?
Motor, basal plate
Which nuclei is the only one outside of the brain stem?
CN 11=>spinal cord
Cranial Nerve 2 comes out from?
Optic Canal
Cranial Nerve 3, 4, V1 and 6 ophthalmic vein and symp. fibers comes out from?
Superior Orbital Fissure
Foramen Rotundum?
CN V2
Foramen Ovale?
What is round and looks like breast?
CN 3
Foramen Spinosum?
Middle meningeal artery
What bone is CN2-6 going through?
Sphenoid
CN7 and 8 comes out from?
Internal Auditory Meatus
CN9, 10, 11 and jugular veins comes out from?
Jugular foramen
CN 12 comes out from
Hypoglossal canal
Vertebral arteries, brainstem and CN 11 spinal roots come out from?
Foramen Magnum
CN 7-12 come out from which bone?
Temporal or occipital bone
Visceral Senosry info from 7, 9, 10>
Nucleus Solitarus
Motor innervation of pharynx, larynx and upper esophagus?
Nucleus aMbiguus
Dorsal motor nucleus involves what nerve and where does it send its fibers to?
CN 10 Sends autonomic (parasymp) fibers to heart lungs and upper GI
Corneal Reflex? Afferent and Efferent
Afferent: V1
Efferent: 7
Lacrimation Reflex? Afferent and Efferent
Afferent: V1
Efferent: 7
Jaw Jerks Reflex? Afferent and Efferent
Afferent: V3
Efferent: V3
Pupillary Reflex? Afferent and Efferent
Afferent: 2
Efferent: 3
Gag Reflex? Afferent and Efferent
Afferent: 9
Efferent: 10
CN 5 and 12 deviates towards or away?
Think Tongue
Towards
CN 10 (Uvula) deviates towards or away?
Away
CN 11 there is weakness turning the head to the same side or opposite side of the lesion? Shoulder droop on the same side or opposite side
Opposite side
Same Side
How do you know your in the cervical region?
2 C’s of the spinal cord
In your cervical region, it is ipsilateral for? Contralateral for?
Ipsilateral Motor
Contralateral Pain and Temperature
Signs of Upper Motor Neuron Lesion?
Hyperreflexia, DTRs and +Babinski
