myotomes&dermatomes

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بمااني في الجراحة كورس..Shk1_1Samai_1Bandage_1

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Mytmes & Dematmes
Spina neves have mt fibes and sensy fibes. The mt fibes innevate etain mses, whie the sensy fibes innevate etain aeas f skin. A skin aea innevated by the sensy fibes f a singe neve t is knwn as a dematme. A gp f mses pimaiy innevated by the mt fibes f a singe neve t is knwn as a mytme. Athgh sight vaiatins d exist, dematme and mytme pattens f distibtin ae eativey nsistent fm pesn t pesn.
Mytmes


Mytmes - eatinship between the spina neve & mse
Dematmes - eatinship between the spina neve & skin.

Eah mse in the bdy is sppied by a patia eve segment f the spina d and by its espnding spina neve. The mse, and its neve make p a mytme. This is appximatey the same f evey pesn and ae as fws:
3,4 and 5 sppy the diaphagm (the age mse between the hest and the bey that we se t beath).
5 as sppies the shde mses and the mse that we se t bend ebw .
6 is f bending the wist bak.
7 is f staightening the ebw.
8 bends the finges.
T1 speads the finges.
T1 –T12 sppies the hest wa & abdmina mses.
2 bends the hip.
3 staightens the knee.
4 ps the ft p.
5 wigges the tes.


S1 ps the ft dwn.
S3,4 and 5 sppy the badde. bwe and sex gans and the ana and the pevi mses.
Dematmes


Dematme is a Geek wd whih iteay means "skin tting". A dematme is an aea f the skin sppied by neve fibes iginating fm a singe dsa neve t. The dematmes ae named ading t the spina neve whih sppies them. The dematmes fm int bands and the tnk bt in the imbs thei ganisatin is me mpex as a est f the dematmes being "ped t" as the imb bds fm and devep int the imbs ding embygia devepment.
In diagams maps, the bndaies f dematmes ae say shapy defined. Hweve, in ife thee is nsideabe veap f innevatin between adjaent dematmes. Ths, if thee is a ss f affeent neve fntin by ne spina neve sensatin fm the egin f skin whih it sppies is nt say mpetey st as veap fm adjaent spina neves s: hweve,
thee wi be a edtin in sensitivity


 

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