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PNS FINAL EXAM | COMPLETE PRACTICE QUESTIONS, ANSWERS & STUDY GUIDE 2026/2027

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PNS FINAL EXAM | COMPLETE PRACTICE QUESTIONS, ANSWERS & STUDY GUIDE 2026/2027

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PNS FINAL EXAM | COMPLETE PRACTICE QUESTIONS, ANSWERS &
STUDY GUIDE 2026/2027


Parasympathetic Preggl Origin for Iris and Ciliary Body Innervation - correct answer ✔✔Edinger-
Westphal Nucleus (midbrain)



Cranial Nerve 3 (SOF) - correct answer ✔✔Preggl Parasympathetic Axon



Ciliary Ganglion - correct answer ✔✔Preggl Parasympathetic Axon, Postggl Parasympathetic Cell
Body and Axon



Short Ciliary Nerves - correct answer ✔✔Postggl Sympathetic Axon, Postggl Parasympathetic
Axon



Sympathetic Preggl Origin for Iris and Ciliary Body Innervation - correct answer ✔✔T1 IML



Ventral Root - correct answer ✔✔Preggl sympathetic axon



White ramus - correct answer ✔✔Preggl sympathetic axon (sometimes HT GSA's)



Ascending Sympathetic Chain - correct answer ✔✔Preggl sympathetic axon (sometimes HT
GSA's)



Superior Cervical Ganglion - correct answer ✔✔Preggl sympathetic axon, Postggl
parasympathetic axon and cell body



Internal carotid plexus - correct answer ✔✔Postggl sympathetic axon

, Parasympathetic function Iris and Ciliary Body (receptor, neurotransmitter, effect) - correct
answer ✔✔Constriction and Accommodation M1 ACh excitatory



Sympathetic Function Iris and Ciliary Body (receptor, neurotransmitter, effect) - correct answer
✔✔Dilation alpha 1 NE excitatory



Parasympathetic Preggl Origin (Lacrimal Gland innervation) - correct answer ✔✔Superior
Salivary Nucleus (pons)



Greater Petrosal Nerve - correct answer ✔✔Preggl parasympathetic axon



Nerve of Pterygoid Canal - correct answer ✔✔Preggl parasympathetic axon, postggl
sympathetic axon



Sphenopalatine ggl - correct answer ✔✔Preggl parasympathetic axon, postggl parasympathetic
axon and cell body, postggl sympathetic axon



V2 - correct answer ✔✔Postggl parasympathetic axon, postggl sympathetic axon



Sympathetic Preggl Origin - correct answer ✔✔T1 IML



Deep Petrosal Nerve - correct answer ✔✔Postggl sympathetic axon



Parasympathetic functions (lacrimal gland) - correct answer ✔✔Emotional tears M1 ACh
excitatory



Sympathetic functions (lacrimal gland) - correct answer ✔✔Physiologic tears alpha 1 NE
excitatory

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