PeripheralNerves

A nice visual mnemonic to recall the cranial nerves and their foramen.  

Basic overview of the cranial nerves anatomy and function  

All you need to know about Cranial Nerves in one spreadsheet  

Learn how to examine the cranial nerves with key facts and landmarks explained and highlighted.  

 

Ptosis is the lagging of an eyelid. It has 2 distinct etiologies. Sympathetics going to the eye innervate Muller's muscle, a small muscle that elevates the eyelid. The III cranial nerve also innervates a much larger muscle that elevates the eye lid: the levator palpebrae. Thus, disruption of either will cause ptosis. The ptosis from a III nerve palsy is of greater severity than the ptosis due to a lesion of the sympathetic pathway, due to the size of the muscles innervated. As an aside, the parasympathetics run with the III cranial nerve and are usually affected with an abnormal III cranial nerve.  

 

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All peripheral nerves are myelinated, except C fibres – which carry information about pain. These C fibres are sometimes called ‘slow fibres’ because the signal travels slowly due to the lack of myelination.   Specific causes of peripheral neuropathy The mnemonic DAVID can be used as a method to remember specific causes of peripheral neuropathies  

MS is an inflammatory condition that affects the oligodendrocites of the CNS. Peripheral nerves are not affected.  

If you want the PDF of the 12 Cranial Nerves --- it can be purchased here https://www.scribd.com/doc/244032967/12-Cranial-Nerves I reduced the length of my o...  

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Dr. Fabian explaining the cranial nerves  

Educational video describing the major peripheral nerves of the upper extremity. Become a friend on facebook: http://www.facebook.com/drebraheim Follow me on...  

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