N5315 Neurologic System Core Knowledge Study Objective with Advanced Organizers
Core Knowledge Objectives with Advanced Organizers
1.	Discuss the anatomy and physiology of the brain and brain stem.
a.	Explain the function of the twelve cranial nerves
Cranial Nerve	Function	Sign of Dysfunction
I Olfactory	Purely sensory; carries impulse for sense of smell
Fibers arise from nasal olfactory epithelium and from synapses with olfactory bulbs that transmit impulses to temporal lobe	Person is asked to sniff aromatic substances such as oil of closes vanilla and identify them
Hyposmia-impared sense of smell and anosmia
II optic	Purely sensory, carries impulse for vision.
Fibers arise from retina of eye to form optic nerve which passes through sphenoid bone: two optic nerves form the form optic chiasma and eventually end in occipital cortex	Vision and visual field tested with an eye chart and by testing point at which person first sees an object moving into visual field, inside eye is viewed with scope to observe blood vessels of eye interior.
III oculomotor	Contains motor fibers to interior oblique and superior, inferior, and medial rectus extraocular muscles that direct eyeball; levator muscle of eyelid, smooth muscle of iris and ciliary body; and proprioception to brain from extraocular muscle
Fibers emerge from midbrain and exit from skull and extend eye	Puplis examine for size shape and equality pupiliary reflex tested with a penlight ability to follow moving objects
IV trochlear	Proprioceptor and motor fibers for superior obliques muscles of eye
Fiber emerges from posterior midbrain and exit from skull to run to eye	Test common with cranial nerve III
V Trigeminal	Both motor and sensory for face; conduct sensory impulses from mouth nose, surface of eye and dura mater; also contains motor fibers that stimulate muscle to brain
Fibers emerge from pons and from three division that exit from skull and run to face and cranial dura mater
Sensation of pain, touch, and temperature tested with safety pin and hot and cold objects
VI Abducent	Contains motor fibers to lateral rectus muscle and proprioceptor fibers from same muscle to brain
Fiber leave interior pons and exit from skull and extend to eye	Tested in common with cranial nerve III relative to move each eye laterally