Re: Lecture 68: Functional Components Cranial Nerves - True False

Comments:
: Cranial Nerve Functional Components : 1. The olfactory nerve fascicles pass through the cribriform plate of the ethmoid bone to enter the nasal cavity from the anterior cranial fossa. : - true : 2. A fracture of the cribriform plate may cause a CSF leak. : - true : 3. The olfactory nerve has native SVA and GVE components. : - false ⇒ only SVA : 4. A hypophyseal tumor is expected to disrupt central vision. : - false ⇒ peripheral vision disruption : 5. The chiasmatic groove is posterior to the hypophyseal fossa. : - false ⇒ anterior : 6. The afferent limb of the pupillary light reflex is mediated by the SSA component of the oculomotor nerve. : - false ⇒ not SSA : 7. A lesion of the proximal superior division of the oculomotor nerve is expected to disrupt GSE and GVE components. : - false ⇒ superior division doesn't do GVE : 8. Preganglionic GVE cell bodies from the Edinger-Westphal nucleus synapse in the submandibular ganglion. : - false ⇒ ciliary ganglion : 9. The short ciliary nerves host native GSA fibers non-native preganglionic GVE fibers. : - false ⇒ opposite of what it says : 10. Postganglionic GVE fibers having cell bodies in the ciliary ganglion mediate accommodation as well as pupillary dilation. : - false ⇒ pupillary constriction not dilation : 11. A lesion of the greater superficial petrosal nerve at the lacerate foramen disrupts preganglionic GVE fibers that influence lacrimation. : - true : 12. The short ciliary nerves host non-native postganglionic fibers from both divisions of the autonomic nervous system. : - true : 13. A lesion of the internal carotid nerve is expected to disrupt preganglionic sympathetic GVE fibers and cause unilateral mydriasis. : - false ⇒ postganglionic and you'd have miosis : 14. A cavernous sinus infection is expected to cause unilateral pupil dilation given that the sympathetic root of the ciliary ganglion remains healthy. : - we aren't sure : 15. A mild ptosis in a young person may be caused by a GVE disturbance whereas a frank ptosis is caused by GSE disturbance. : - false ⇒ SVE for frank ptosis?? : 16. Sneezing while looking at bright light is thought to be, in part, mediated by the GSA component of the trigeminal nerve. : - can you explain the pathway of this reflex?? : 17. The infraorbital nerve, while in the infraorbital canal, carries non-native postganglionic GVE fibers en route to the lacrimal gland. : - false ⇒ lacrimal nerve : 18. The lacrimal nerve proper is GSA only and does not mediate lacrimation. : - true : 19. Traveling along with the distal parts of the lacrimal nerve are postganglonic GVE fibers whose cell bodies are located in the pterygopalatine ganglion. : - true : 20. The extraocular muscles, with the exception of the superior oblique, are innervated by SVE fibers. : - false => extraocular muscles are GSE & GVE

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