F08 U-5 L-3 peripheral nerves_1

F08 U-5 L-3 peripheral nerves_1 - Major Peripheral Nerves &...

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Spinal nerves (31 pairs) + Cranial nerves (12 pairs) (network of nerves)
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Dermatome - An a re a  o f s kin s upplie d b y a  s ing le   s pina l c o rd le ve l Somites: Dermatomes  Myotomes
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C6  thumb C8  5th finger L4  big toe T10  umbilicus T4  nipple S1  lateral malleolus
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dorsal ramus  intrinsic back muscles ventral ramus  everything else
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Nerve Damage !!!
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Nerve Plexuses primarily serve the limbs Cervial plexus (C1-C5), neck innvervation Brachial plexus (C5-T1), Intercostal nerves (T2-T12) Lumber plexus (L1-L4) Sacral plexus (L4-S4) Interlacing network of nerves (ventral rami only ) Ea c h e nd b ra nc h c o nta ins  fib e rs  fro m  diffe re nt  s pina l ne rve s Fib e rs  fro m  e a c h ve ntra l ra m us  tra ve l diffe re nt  ro ute s  o r b ra nc he s S ing le  S N c a n’t c o m ple te ly pa ra lyze  lim b  m us c le
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Cervical Plexus C 1 C 3 C 2 C 4 C 5 Cutaneous to external ear, cheek, neck,  shoulder Sensory: 
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This note was uploaded on 10/20/2008 for the course PTH AS 2201 taught by Professor Ward during the Fall '08 term at Missouri (Mizzou).

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F08 U-5 L-3 peripheral nerves_1 - Major Peripheral Nerves &...

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