Cranial nerves Flashcards
Pineal gland
Melatonin secretion and circadian rhythms
Superior colliculi
Conjugate vertical gaze center
Inferior colliculi
Auditory
What is parinaud syndrome?
Paralysis of conjugate vertical gaze due to a lesion in the superior colliculi
the nuclei of which cranial nerves is found in the midbrain?
CN 3 and 4
Which cranial nerve nuclei are found in the pons?
5,6,7,8
Which cranial nerve nudlei are found in the medulla?
9 10 12
Which cranial nerve nuclei are found in the spinal cord?
CN 11
What form of nuclei are motor?
Medial nuclei
Which form of nuclei are sensory
Lateral nuclei
What bone does CN 2-6 pass through?
The sphenoid bone
Which foramen does CN II pass through?
Optic canal
What foramen does CN 3 pass through?
Superior orbital fissure
What foramen does CN IV pass through?
Superior orbital fissure
What foramen does CN V1 pass through?
Superior orbital fissue
What foramen does CN VI pass through?
Superior orbital fissure
What vasculature goes throgh the superior orbital fissure?
Opthalmic vein.
What goes through the foramen rotundum?
CN V2
What goes through the foramen ovale?
CN V3
What goes through the foramen spinosusm?
Middle meningeal artery
Which CN go through the internal auditory meatus?
CN VII and CN VIII
Which cranial nerve passes through the jugular foramen?
CN 9, 10, and 11 along with the jugular vein.
Which CN passes through the foramen magnum?
CN XI
Brainstem
Vertebral arteries
Which cranial nerve controls eyelid opening and pupillary constriction?
Oculomotor CN III
Which nerve controls the obicularis oculus?
CN 7
Which nerve controls the stapedius?
CN7
Which nerve innervates the salivary glands (not the parotid)
CN 7
Which nerve controls lacrimation?
CN7
Which neck muscle does CN 9 innervate that is unique?
Stylopharangeus helping with swallowing elevating the pharynx and lrynx
Which CN controls the parotid gland?
CN9
Which CN monitors the carotid body and other chemo/baroreceptors?
CN 9 glossopharyngeal.
Which CN monitors the aortic arch chemoreceptors?
CN X
What does the nucleus solitaris carry and which CN talk to it?
Carries visceral sensory (taste, baroreceptors, gut distension)
CN 7, 9 ,10
What does nucleus ambiguus carry and which nerves does it talk to?
Motor innervation of the pharynx, larynx, upper esophagus
(swallowing and palate elevation)
CN 9, 10, 11
What does the dorsal motor nucleus carry and which nerves does it talk to?
Sends autonomic (parasympathetic) fibers to the heart, lungs, and upper GI
CN X talks to it.
Corneal reflex afferent and efferent nerve
V1 afferent VII efferent (temporal branch; obicularis occuli)
Lacrimation reflex afferent and efferent
V1 afferent (loss of reflex doesnt preclude emotional tears) VII efferent
Jaw jerk reflex aferent and efferent
V3 (muscle spindle sensory in masseter)
V3 motor to the masseter
Pupillary reflex afferent and efferent
Afferent CN II
Efferent CN III
Gag reflex afferent and efferent
IX afferent
X efferent
