Res�mo de Anatomia H�mana
M E S U E M B R R O O S S S U P P E E R R I I O O R R E E S S
O��O� DO� MEMBRO� ��PERIORE� Os ossos dos membros s�periores podem ser di�ididos em q�atro segmentos: ������a ��ca���a� : cla��c�la e esc�p�la; ��a��: �mero; A���b�a��: r�dio e �lna; M��: ossos da m�o (carpo, metacarpo e falanges). o o o o
C�������� A cla��c�la forma a por��o �entral da cint�ra escap�lar. � �m osso longo c�r�ado como �m �S� it�lico, sit�ado q�ase q�e hori�ontalmente logo acima da primeira costela. Artic�la�se medialmente com o man�brio do esterno e lateralmente com o acr�mio da esc�p�la. Principais acidentes �sseos: E�tremidade esternal; E�tremidade acromial; Corpo da cla��c�la; T�b�rc�lo con�ide; Linha trape��ide; Impress�o do ligamento costocla��c�lar; S�lco do m�sc�lo s�bcl��io. o o o o o o o
E������� � �m osso par, chato bem fino podendo ser transl�cido em certos pontos. Forma a parte dorsal da cint�ra escap�lar. A esc�p�la artic�la�se com dois ossos: �mero e cla��c�la. Tem a forma triang�lar apresentando d�as faces, tr�s margens e tr�s �ng�los. F��� D����� Espinha da esc�p�la � ���a�a ���a�a a� ����a� ����a � ����a�������a�; Acr�mio � ��ca���a��� �a �������dad� da ������a; Fossa s�praespinal � � c��ca�a � ���a, ��ca���ada ac��a da ������a; Fossa infraespinal � � c��ca�a � ��ca���a��� aba��� da ������a. F��� C����� Fossa s�bescap�lar. M����� S������� Incis�ra escap�lar � ��c����a �����c��c��a� ��ca���ada �a ������ �a���a� � � o o o o
o
o
o
����ada ���a ba�� ba�� d� ���c���� c��ac��d�; c��ac��d�; Processo corac�ide � ���c���� c���� � ������� ������� a� c��� da ��c����a.
M����� L������ M����� M����� ������ I������� � ������� � ������. ������ S������� � ����, ���� � a���d��dad�.
106
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FELIX, Fernando �lison M. D.
������ L������ � � a����ad� �� �� ���c���� �������. ����a �a a���c��a��� d� ��b��. o
Ca�idade glen�ide � � ��a ��ca�a��� da ��c����a ��� �� a���c��a c�� � �����;
o o
T�b�rc�lo s�praglenoidal � ��ca���a��� ac��a da ca��dad� ������d�; T�b�rc�lo infraglenoidal � ��ca���a��� aba��� da ca��dad� ������d�.
����� � o maior e mais longo osso do membro s�perior e constit�i o bra�o. Artic�la�se s�periormente com a ca�idade glen�ide da esc�p�la na artic�la��o do ombro, e inferiormente, com o r�dio (lateralmente) e com a �lna (medialmente), na artic�la��o do coto�elo. Apresenta d�as ep�fises e �ma diaf�se. E������ P������� Cabe�a do �mero � a���c��a��� a���c��a��� c�� a ca��dad� ������d� da ��c����a; T�b�rc�lo maior � ����a��� �a���a������ � cab��a � a� ��b��c��� �����; T�b�rc�lo menor � ������a��� ��d�a������ ���� aba��� d� c���; Colo anat�mico � ����a �� ������ �b���� c�� � c����; Colo cir�rgico; S�lco intert�berc�lar intert�berc�lar � ���c� ������d� ��� ���a�a �� d��� ��b��c����; E������ D����� Tr�clea � Tr�clea � ������a��� a �� ca������. A���c��a��� c�� a ���a; Cap�t�lo � ������c�a ���a � a���d��da�a. A���c��a��� c�� � ��d��; Epic�ndilo medial � ��ca���a��� ��d�a������ � ���c��a; Epic�ndilo lateral � ������a ������c�a ��b��c��ada. L�ca���ad� �a���a������ o o o o o o
o o o o
a� ca������; o
o o
o
Fossa coron�ide � ������a d�������� ��� ��c�b� ���c���� c������d� da ���a �a ������ d� a���b�a��; Fossa radial � ������a d��������; Fossa do ol�crano � d�������� ���a����a� ������da ��� ��c�b� � ���c�a�� �a �������� d� a���b�a��; S�lco do ner�o �lnar � d�������� ��ca���ada ������������� a� ���c��d��� ��d�a�;
D������ o
T�berosidade delto�dea � ����a��� ���a����a� �����a �a�a �������� d� ���c��� d�����d�;
o
S�lco do ner�o radial � d�������� �b����a a���a � �a�a.
����� � o osso lateral do antebra�o. � o mais c�rto dos dois d ois ossos do antebra�o. Artic�la�se pro�imalmente com o �mero e a �lna e distalmente com a �lna e os ossos do carpo (escaf�ide e semil�nar). Apresenta d�as ep�fises e �ma di�fise. E������ P������� Cabe�a � Cabe�a � � c����d��ca � a���c��a��� c�� � ca������ d� �����; o
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Res�mo de Anatomia H�mana
o
T�berosidade radial � ������c�a ��ca���ada ��d�a������, �a ��a� � ���d�� d� b�c��� �� ������.
E������ D����� Incis�ra �lnar do r�dio � �ac� a���c��a� �a�a a ���a; Face artic�lar carpal � � c��ca�a, ���a � a���c��a��� c�� � ���� ��ca���d� � o o
�������a�; o o
Processo estil�ide � �������� c���ca; T�b�rc�lo dorsal.
D������ o
Margem inter�ssea.
���� � o osso medial do antebra�o. Artic�la�se pro�imalmente com o �mero e o r�dio e distalmente apenas com o r�dio. � �m osso longo q�e apresenta d�as ep�fises e �ma di�fise. E������ P������� Ol�crano � ������c�a ������c�a ��a�d� ��� ����a a ����a d� c������� Incis�ra troclear � ��a�d� d�������� ����ada ���� ���c�a�� � � ���c���� o o
o
o
c������d� � ����� �a�a a���c��a��� c�� a ���c��a d� ����� Processo coron�ide � ������a��� da �a��� a������� � ������a� d� c���� da ���a Incis�ra radial da �lna � a���c��a��� c�� a cab��a d� ��d��
T�berosidade �lnar E������ D����� Cabe�a da �lna � �lna � ������c�a a���c��a� a���d��dada ��ca���ada �a���a������ Processo estil�ide � ��ca���ad� �a�� ��d�a������ � � �a�� �a������ (��� o
o o
a���c��a�); o
Circ�nfer�ncia artic�lar da cabe�a da �lna. � lna.
D������ o
Margem inter�ssea.
����� �� ��� A m�o se di�ide em: carpo, metacarpo e falanges. C���� � S�o oito ossos distrib��dos em d�as fileiras: pro�imal e distal. Fileira pro�imal: Esc�foide; Semil�nar; Piramidal; Pisiforme. Fileira distal: Trap��io; Trape��ide; Capitato; o o o o
o o o
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FELIX, Fernando �lison M. D.
longos, apresentam �ma ep�fise pro�imal q�e � a base, �ma di�fise (corpo) e �ma ep�fise distal q�e � a cabe�a. D���� �� M�� � Apresentam 14 falanges: Do 2� ao 5� dedos: d edos: 1� falange (Pro�imal); 2� falange (M�dia); 3� falange (Distal). Polegar: 1� falange (Pro�imal); 2� falange (Distal). o o o
o o
AR�IC�LA��E� DO� MEMBRO� ��PERIORE� A����������� �� ����� O ombro � formado por tr�s artic�la��es: Esternocla�ic�lar; Acromiocla�ic�lar; Gleno�meral. Alg�ns a�tores ainda consideram o�tra artic�la��o no comple�o do ombro: a artic�la��o c������ca���a� , entre as costelas e a esc�p�la, m�ito importante na biomec�nica fisiol�gica do ombro. o o o
A���������� E���������������� Essa artic�la��o � formada pela �ni�o da e�tremidade esternal da cla��c�la e o man�brio do esterno. Poss�i P oss�i as seg�intes estr�t�ras artic�lares: C�ps�la artic�lar � circ�nda a artic�la��o e �aria em espess�ra e resist�ncia. Ligamento esternocla�ic�lar anterior � � �m amplo fei�e de fibras cobrindo a face anterior da artic�la��o. Ligamento esternocla�ic�lar posterior � � �m an�logo fei�e de fibras q�e recobre a face posterior da artic�la��o. Ligamento intercla�ic�lar � � �m fei�e achatado q�e �ne as faces s�periores das e�tremidades esternais das cla��c�las. Ligamento costocla�ic�lar � � peq�eno, achatado e resistente. Est� fi�ado na parte s�perior e medial da cartilagem da primeira costela e face inferior da cla��c�la. Disco artic�lar � � achatado e est� interposto entre as s�perf�cies artic�lares do esterno e cla��c�la. o o
o
o
o
o
A���������� A���������������� � �ma artic�la��o plana entre a e�tremidade acromial da cla��c�la e a margem medial do acr�mio. � formada pelas seg�intes estr�t�ras: C�ps�la artic�lar � en�ol�e toda a artic�la��o acr�mio�cla�ic�lar.
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Res�mo de Anatomia H�mana
o
o
o
Ligamento coracocla�ic�lar � �ne a cla��c�la ao processo corac�ide da esc�p�la. � formado por dois ligamentos: ���a����� ��a�����d� e ���a����� c����d�. Ligamento coracoacromial � � �m forte fei�e triang�lar estendido entre o processo corac�ide e o acr�mio. � �m ligamento importante para estabili�a��o da cabe�a do �mero na ca�idade glen�ide, pois e�ita a ele�a��o da mesma nos mo�imentos de abd���o acima dos 90 gra�s. Ligamento trans�erso s�perior da esc�p�la � � �m fino fasc�c�lo achatado inserido no processo corac�ide e na incis�ra da esc�p�la.
F����� 59: V���� �������� ��� ���������� ����������� �� �����.
A���������� G���������� Esta � �ma artic�la��o esfer�ide m�ltia�ial com tr�s gra�s de liberdade. As faces artic�lares s�o a cabe�a hemisf�rica do �mero (con�e�a) e a ca�idade glen�ide da esc�p�la (c�nca�a). A artic�la��o gleno�meral (o� ��ca��������a� ) � formada pelas seg�intes estr�t�ras: C�ps�la artic�lar � en�ol�e toda a ca�idade glen�ide e a cabe�a do �mero. Ligamento coraco�meral � � �m amplo fei�e q�e fortalece a parte s�perior da c�ps�la. Ligamentos gleno�merais � s�o rob�stos espessamentos da c�ps�la artic�lar sobre a parte �entral da artic�la��o. � constit��do por tr�s ligamentos: ligamento gleno�meral s�perior; ligamento gleno�meral m�dio; ligamento gleno�meral inferior. o o
o
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FELIX, Fernando �lison M. D.
o
L�bio (labr�m) glenoidal � � �ma orla fibrocartilag�nea inserida ao redor da ca�idade glen�ide. Tem importante f�n��o na estabili�a��o gleno�meral e q�ando rompido proporciona �ma instabilidade artic�lar faciltando o deslocamento anterior o� posterior do �mero (l��a��o).
A����������� �� C������� A artic�la��o do coto�elo � �m g�nglimo o� artic�la��o em dobradi�a. Poss�i tr�s artic�la��es: ��������a� , entre a tr�clea do �mero e a incis�ra troclear da �lna, �������ad�a� , entre o cap�t�lo do �mero e a cabe�a do r�dio e �ad�����a� ������a� , entre a cabe�a do r�dio e a incis�ra radial da �lna. As s�perf�cies artic�lares s�o re�nidas por �ma c�ps�la q�e � espessada medial e lateralmente pelos ligamentos colaterais �lnar e radial. C�ps�la artic�lar � circ�nda toda a artic�la��o e � formada por d�as partes: anterior e posterior. A parte anterior � �ma fina camada fibrosa q�e recobre a face anterior da artic�la��o. A parte posterior � fina e membranosa e consta de fibras obl�q�as e trans�ersais. Ligamento colateral �lnar � � �m fei�e triang�lar espesso constit��do de d�as por��es: anterior e posterior, �nidas por �ma por��o p or��o intermedi�ria mais fina. Ligamento colateral radial � � �m fei�e fibroso triang�lar, menos e�idente q�e o ligamento colateral �lnar. A a���c��a��� �ad�����a� ������a� � �ma j�nt�ra troc�ide o� em pi��, entre a circ�nfer�ncia da cabe�a do r�dio e o anel formado pela incis�ra radial da �lna e o ligamento an�lar. Ligamento an�lar � � �m forte fei�e de fibras q�e en�ol�em a cabe�a do r�dio, mantendo�a em contato com a incis�ra radial da �lna. Da margem inferior do ligamento an�lar sai �m fei�e espesso de fibras q�e se estende at� o colo do r�dio, denominado ���a����� ��ad�ad�. o
o
o
o
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Res�mo de Anatomia H�mana
A����������� �� ����� A artic�la��o do p�nho � formada pelas artic�la��es �ad�����a� d���a� �ad�����a� d���a� e e �ad��c����ca. A a���c��a��� �ad��a���a� d���a� � � �ma j�nt�ra troc�ide formada entre a cabe�a da �lna e a incis�ra �lnar da e�tremidade inferior do r�dio. � �nida pela c�ps�la artic�lar e pelo disco artic�lar. C�ps�la artic�lar � � constit��da de fei�es de fibras inseridas nas margens da incis�ra �lnar e na cabe�a da �lna. Apresenta dois espessamentos denominados ���a����� �ad�����a� �����a� e e �ad�����a� d���a� . Disco artic�lar � tem forma triang�lar e est� colocado trans�ersalmente sob a cabe�a da �lna, �nindo firmemente as e�tremidades inferiores da �lna e do r�dio. A a���c��a��� �ad��c����ca (sindesmose) � �ma j�nt�ra condilar. � formada pela e�tremidade distal do r�dio e a face distal do disco artic�lar com os ossos escaf�ide, semil�nar e piramidal. A artic�la��o radioc�rpica � formada pelos seg�intes ligamentos: Ligamento radioc�rpico palmar � � �m largo fei�e membranoso inserido na margem anterior da e�tremidade distal do r�dio, no se� processo estil�ide e na face palmar da e�tremidade distal da �lna. S�as fibras se dirigem distalmente para inserir�se nos ossos escaf�ide, semil�nar e piramidal. Ligamento radioc�rpico dorsal � � menos espesso e resistente q�e o palmar. S�a inser��o pro�imal � na borda posterior da e�tremidade distal do r�dio. S�as fibras s�o dirigidas obliq�amente no sentido distal e �lnar e fi�am�se nos ossos escaf�ide, semil�nar e piramidal. Ligamento colateral �lnar � � �m cord�o arredondado inserido pro�imalmente na e�tremidade do processo estil�ide da �lna e distalmente nos ossos piramidal e psiforme. Ligamento colateral radial � estende�se do �pice do processo estil�ide do r�dio para o lado radial do escaf�ide. o
o
o
o
o
o
Distalmente �s artic�la��es est�dadas acima, encontramos ainda as a���c��a���� �����c����ca�, ca������a�����ca�, ��������a�����ca�, ���aca����a�a���a�a� e ������a�a���a�a�.
M��C�LO� DO� MEMBRO� ��PERIORE�
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FELIX, Fernando �lison M. D.
��������� Iner�a��o: Ner�o do s�bcl��io (C5 � C6); A��o: Depress�o da cla��c�la e do ombro.
�������� A������� Iner�a��o: Ner�o Tor�cico Longo (C5 � C7); A��o: � Fi�o na Esc�p�la: A��o inspirat�ria; � Fi�o nas Costelas: Rota��o s�perior, abd���o e depress�o da esc�p�la e prop�ls�o do ombro.
�������� ������������������� ����������� ������������ �������� Iner�a��o: Ner�o Acess�rio (XI par craniano) e ner�o do trap��io (C3 � C4); A��o: � Fi�o na Col�na: Ele�a��o do ombro, ad���o das esc�p�las, rota��o s�perior das esc�p�las e depress�o de ombro; � Fi�o na Esc�p�la: �����a��� U���a���a� : Inclina��o homolateral e rota��o contralateral da cabe�a; �����a��� ���a���a� : E�tens�o da cabe�a.
L�������� �� D���� (G���� D�����) Iner�a��o: Ner�o Toracodorsal (C6 � C8); A��o: Ad���o, e�tens�o e rota��o medial do bra�o. Depress�o do ombro.
�������� ������������������� ����������� ��������� L��������� �� E������� Iner�a��o: Ner�o Dorsal da Esc�p�la (C5); A��o: Ele�a��o e ad���o da esc�p�la. Inclina��o e rota��o homolateral da col�na cer�ical e e�tens�o da cabe�a.
R������� M���� Iner�a��o: Ner�o Dorsal da Esc�p�la (C5);
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Res�mo de Anatomia H�mana
������������ Iner�a��o: Ner�o S�praescap�lar (C5 e C6); A��o: Abd���o do bra�o.
I����������� Iner�a��o: Ner�o S�praescap�lar (C5 e C6); A��o: Rota��o lateral do bra�o.
R������ M���� Iner�a��o: Ner�o A�ilar (C5 e C6); A��o: Rota��o lateral e ad���o do bra�o. b ra�o.
R������ M���� Iner�a��o: Ner�o S�bescap�lar Inferior � Fasc�c�lo posterior do ple�o braq�ial (C5 e C6); A��o: Rota��o medial, ad���o e e�tens�o da artic�la��o do ombro.
������������ Iner�a��o: Ner�o S�bescap�lar S�perior e Inferior � Fasc�c�lo posterior (C5 e C6); A��o: Rota��o medial e ad���o do bra�o.
<< �������� ������� >> A f�n��o principal deste gr�po � manter a cabe�a do �mero contra a ca�idade glen�ide, refor�ar a c�ps�la artic�lar e resistir ati�amente e deslocamentos indesej��eis da cabe�a do �mero em dire��o anterior, posterior e s�perior. Todos eles, e�ceto o s�pra�espinal, s�o rotadores do �mero. Fa�em parte do mang�ito rotador os seg�intes m�sc�los: S�pra�espinal; Infra�espinal; Redondo menor; S�bescap�lar. o o o o
<< E����� ������������ � E����� ���������� >> Os m�sc�los redondos maior e menor j�ntamente com o �mero delimitam �m espa�o de formato triang�lar, o q�al � s�bdi�idido pela cabe�a longa do m�sc�lo tr�ceps
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FELIX, Fernando �lison M. D.
Iner�a��o: Ner�o M�sc�loc�t�neo (C5 e C6); A��o: Fle��o de coto�elo / ombro e s�pina��o do antebra�o.
B������� Mais importante fle�or do antebra�o. Fica em bai�o do b�ceps. Origina�se na parte m�dia do corpo do �mero e �ai se fi�ar na t�berosidade da �lna. Iner�a��o: Ner�o M�sc�loc�t�neo (C5 e C6); A��o: Fle��o de coto�elo.
C������������� Fica em bai�o do b�ceps e ao lado do braq�ial (medial a ele). � �m peq�eno m�sc�lo q�e se origina no processo corac�ide e se fi�a no corpo do �mero. Ele abai�a o ombro. N�o tem �ma import�ncia f�ncional m�ito grande. Iner�a��o: Ner�o M�sc�loc�t�neo (C5 e C6); A��o: Fle��o e ad���o do bra�o.
�������� �� B���� � ������ ���������: E��������� �� A�������� ������� B������� Na regi�o posterior o mais importante � o tr�ceps braq�ial. Tem 3 cabe�as: a longa, a lateral e a medial. Fa� e�tens�o do antebra�o. Iner�a��o: Ner�o Radial (C7 � C8; A��o: E�tens�o do coto�elo.
A������ Insere�se j�nto com o tr�ceps, � bem peq�eno, fica perto do ol�crano, fa� e�tens�o do antebra�o tamb�m. Iner�a��o: Ner�o Radial (C7 e C8); A��o: E�tens�o do coto�elo.
�������� �� A�������� � ������ A�������: A �������: F������� �� C���� 1� C�����
P������� R������ Iner�a��o: Ner�o Mediano (C6 � C7);
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Res�mo de Anatomia H�mana
A��o: Fle��o de p�nho e ad���o da m�o (des�io �lnar). 2� C�����
F����� ����������� ��� D���� Iner�a��o: Ner�o Mediano (C7 e T1); A��o: Fle��o de p�nho e da falange pro�imal � 2� ao 5� dedos. 3� C�����
F����� P������� ��� D���� Iner�a��o: Ner�o Mediano (C8 � T1): 2� e 3� dedos. Ner�o Ulnar (C8 � T1): 4� e 5� dedos; A��o: Fle��o de p�nho, falange pro�imal e falange distal do 2�,3�,4� e 5� dedos.
F����� L���� �� P������ Iner�a��o: Ner�o Mediano (C8 e T1); A��o: Fle��o da falange distal do polegar. 4� C�����
P������� Q������� Para ���lo, tenho q�e rebater o fle�or prof�ndo dos dedos. Iner�a��o: Ner�o Mediano (C8); A��o: Prona��o.
<< C���� �� C���� >> Trata�se de �m t�nel osteofibroso sit�ado entre a regi�o anterior do antebra�o e a palma da m�o, desen�ol�ido atr�s do ������c��� d�� ��������, pelo q�al passam os tend�es fle�ores s�perficiais e prof�ndos dos dedos circ�ndados por s�as bainhas sino�iais e o ner�o mediano. O ����� ������a�c��a� ���a� (art�ria (art�ria e ner�o �lnares) passa ao lado do canal do carpo, sit�ando�se na parte medial do retin�c�lo dos fle�ores.
<< F���� C������ >> Os limites da fossa c�bital s�o a linha interepicondilar (base), a margem lateral do m.
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FELIX, Fernando �lison M. D.
E������� R����� L���� �� C���� Iner�a��o: Ner�o Radial (C6 e C7); A��o: E�tens�o do p�nho e abd���o da m�o (des�io radial).
E������� R����� C���� �� C���� Iner�a��o: Ner�o Radial (C7 � C8); A��o: E�tens�o do p�nho.
��������� Iner�a��o: Ner�o Radial (C6 e C7); A��o: S�pina��o do antebra�o.
�������� �� A�������� � ������ ���������: E��������� E�� ������� �� C���� C����� S����������
E������� ��� D���� Iner�a��o: Ner�o Radial (C7 � C8); A��o: E�tens�o de p�nho e das falanges pro�imal, m�dia e distal do 2� ao 5� dedos.
E������� �� 5� D��� (M�����) Iner�a��o: Ner�o Radial (C7 � C8); A��o: E�tens�o do 5� dedo.
E������� ����� �� C���� Iner�a��o: Ner�o Radial (C6 � C8); A��o: E�tens�o do p�nho e ad���o da m�o (des�io �lnar).
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Res�mo de Anatomia H�mana
<< ���������� A�������� >> Formada pelos tend�es dos m�sc�los abd�tor longo do polegar, e�tensores c�rto e longo do polegar. Cont�m a art�ria radial e os tend�es dos m�sc�los e�tensores radiais c�rto e longo do carpo.
�������� �� ��� � ������ ����� A������ C���� �� P������ Iner�a��o: Ner�o Mediano (C8 � T1); A��o: Abd���o e fle��o do polegar.
F����� C���� �� P������ Iner�a��o: Ner�o Mediano e Ner�o radial; A��o: Fle��o da falange pro�imal do polegar.
O������� �� P������ Iner�a��o: Ner�o Mediano (C8 e T1); A��o: Oposi��o do polegar (fle��o + ad���o + prona��o).
A����� �� P������ Iner�a��o: Ner�o Ulnar (C8 e T1); A��o: Ad���o do polegar.
�������� �� ��� � ������ H�������� P����� C���� � �m m�sc�lo c�t�neo (locali�ado prof�ndamente na derme), inserindo�se na
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FELIX, Fernando �lison M. D.
�������� �� ��� � ������ ������ L��������� Ficam entre os metacarpianos e s�o mais s�perficiais. O 1� e 2� s�o �nipenados enq�anto q�e o 3� e o 4� s�o bipenados. Iner�a��o: Ner�o Mediano (1� e 2�) e Ner�o Ulnar (3� e 4�) (C8 e T1); A��o: Fle��o da falange pro�imal do 2� ao 5� dedos + propriocep��o dos dedos.
I���������� P������� S�o �nipenados. At�am no 2�, 4� e 5� dedos e s�o mais prof�ndos q�e os l�mbricais. Iner�a��o: Ner�o Ulnar (C8 � T1); A��o: Ad���o dos dedos (apro�ima os dedos).
I���������� D������ S�o bipenados. At�am do 2� ao 5� dedos. Iner�a��o: Ner�o Ulnar (C8 � T1); A��o: Abd���o dos dedos (afasta os dedos).
� A�C�LARI�A��O DO� MEMBRO� ��PERIORE� ��������� A������� A ������� ��������� (direita o� esq�erda), logo ap�s o se� in�cio, origina a art�ria �ertebral q�e �ai a��iliar na �asc�lari�a��o cerebral, descendo em dire��o a a�ila recebe o nome de ������� ������ . A art�ria a�ilar tem in�cio ao n��el da margem e�terna da
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Res�mo de Anatomia H�mana
A������ B������� Contin�a��o da art�ria a�ilar, desce �erticalmente pela face �ntero�medial do bra�o. Emite a art�ria braq�ial prof�nda. Na fossa c�bital bif�rca�se em art�rias radial e �lnar. � a art�ria e�aminada q�ando se mede a press�o arterial.
A������ R����� Ramo lateral da art�ria braq�ial, se� trajeto pode ter como ponto de refer�ncia s�perficial �ma linha q�e �ne o meio da fossa c�bital ao canal do carpo. Acompanha o ramo s�perficial do ner�o radial. Entre se�s ramos est� a art�ria recorrente radial.
A������ ����� Ramo medial da art�ria braq�ial, adota a dire��o �ertical pela margem medial do antebra�o at� o retin�c�lo dos fle�ores (pelo q�al passa anteriormente). Emite dois ramos principais: art�ria inter�ssea com�m e art�ria recorrente �lnar. A art�ria �lnar acompanha o ner�o �lnar.
A������ I��������� C���� Constit�i o ramo lateral da art�ria �lnar, q�e chega at� a margem s�perior da membrana inter�ssea, onde se di�ide em art�rias inter�sseas anterior e posterior.
A���� P������� ����������� � P������� O a�c� �a��a� �������c�a� � � formado pelo ramo palmar s�perficial da art�ria radial e, principalmente, pela art�ria �lnar. Dele saem as art�rias metacarpais palmares, e destas saem as art�rias digitais palmares com�ns, q�e originam as art�rias digitais palmares pr�prias. O a�c� �a��a� ������d� � formado pelo ramo colateral da arterial �lnar e,
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FELIX, Fernando �lison M. D.
c�t�neo medial do bra�o, at� o meio do segmento s�perior, q�ando perf�ra a f�scia do bra�o para desembocar na �eia braq�ial medial.
���� M������ �� A�������� A �eia mediana do antebra�o inicia�se com as ��n�las da regi�o palmar e sobe pela face anterior do antebra�o, paralelamente e entre as �eias cef�lica e bas�lica. Nas pro�imidades da �rea fle�ora do antebra�o, a �eia mediana do antebra�o se bif�rca, dando a �eia mediana cef�lica q�e se dirige obliq�amente para cima e lateralmente para se anastomosar com a �eia cef�lica, e a �eia mediana bas�lica q�e dirige obliq�amente para cima e medialmente para se anastomosar com a �eia bas�lica.
����� B�������� T�m origem no coto�elo, de acordo com a forma de �ni�o das d�as �eias radiais e das d�as �lnares prof�ndas, q�e dar�o origem �s �eias braq�iais lateral e medial, interligadas por anastomoses. Na parte s�perior do bra�o, ambas as �eias podem �nir�se n�m �nico tronco: �eia braq�ial com�m.
���� A����� � res�ltante da �ni�o das d�as �eias braq�iais o� da �ni�o da bas�lica com a braq�ial. Sit�a�se medialmente e �m po�co abai�o da art�ria a�ilar.
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Res�mo de Anatomia H�mana
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FELIX, Fernando �lison M. D.
INER�A��O DO� MEMBRO� ��PERIORE� O membro s�perior � iner�ado pelo ple�o braq�ial sit�ado no pesco�o e na a�ila. O P���� B������� � B������� � formado pelo entrela�amento dos ramos �entrais dos q�atro �ltimos ner�os cer�icais (C5 � C8), com o primeiro ner�o tor�cico (T1). O ple�o braq�ial tem locali�a��o lateral � col�na cer�ical e sit�a�se entre os m�sc�los escalenos anterior e m�dio, posterior e lateralmente ao m�sc�lo esternocleidomast�ideo.
F������� �� ����� B������� TRONCOS: C5 �ne�se a C6 formando o ����c� �������� ; C7 constit�i o ����c� ��d��; C8 �ne�se a T1 para formar o ����c� �������� . FASC�CULOS: P�������� : formado pelas di�is�es posteriores dos tr�s troncos do ple�o; La���a� : formado pelos ramos anteriores dos troncos s�perior e m�dio; M�d�a� : formado pelo ramo anterior do tronco inferior. o o o
o o
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Res�mo de Anatomia H�mana
����� C��������� �� ����� B������� N���� D����� �� E������� Pro�eniente do ramo �entral de C5, iner�a o le�antador da esc�p�la e os m�sc�los romb�ides maior e menor.
N���� �������� L���� � formado pelos ramos �entrais de C5, C6 e C7 e iner�a o m�sc�lo serr�til anterior.
N���� �� M������ ��������� Origina�se pr��imo � j�n��o dos ramos �entrais de C5 e C6, e geralmente com�nica� se com o ner�o fr�nico e iner�a o m�sc�lo s�bcl��io.
N���� �������������� Originado do tronco s�perior (C5 e C6), iner�a os m�sc�los s�praespinal e infraespinal.
N���� P������� L������
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FELIX, Fernando �lison M. D.
ner�o inter�sseo posterior). Iner�a o tr�ceps braq�ial e os m�sc�los da regi�o lateral e posterior do antebra�o sendo respons��el pela e�tens�o do antebra�o, da m�o e dos dedos (falange pro�imal), al�m da abd���o do polegar. po legar.
N���� A����� Ner�o misto c�ja principal caracter�stica � ser ner�o motor do m�sc�lo delt�ide. Origina�se abai�o da margem inferior do m�sc�lo peitoral menor e acima da margem inferior do m�sc�lo peitoral maior, acompanha o fei�e ne�ro�asc�lar a�ilar acima do ner�o radial. Passa por bai�o da artic�la��o do ombro, em contato com a s�a c�ps�la artic�lar, e chega � regi�o posterior aplicado � margem inferior do m�sc�lo redondo menor (espa�o q�adrang�lar). Contorna o colo cir�rgico do �mero e termina em ramos para o m�sc�lo delt�ide. Iner�a os m�sc�los delt�ide e redondo menor sendo respons��el pela abd���o do bra�o.
N���� M������������� Origina�se na a�ila atr�s do m�sc�lo peitoral menor, cr��a o tend�o do m�sc�lo s�bescap�lar e a��a����a � ���c��� c��ac�b�a���a�, ��d� ����a���� �a �ac� a������� d� b�a�� (����� �� ���c���� b�a���a� � b�c��� b�a���a�) . Termina na parte �ntero�lateral do
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Res�mo de Anatomia H�mana
N���� C������ M����� �� A�������� Trata�se de �m ner�o �nicamente sensiti�o. Origina�se na a�ila, acompanha o fei�e ne�ro�asc�lar a�ilar, medialmente ao ner�o �lnar. Penetra na regi�o anterior do bra�o, descendo medialmente � art�ria braq�ial, e dirige�se � f�scia s�perficial do bra�o, chegando ao ponto onde a �eia bas�lica se �ne � �eia braq�ial. Desce �erticalmente encostado � �eia bas�lica terminando por bif�rca��o �m po�co acima do coto�elo.
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Fle��o do bra�o M. Delt�ide (por��o cla�ic�lar) M. Peitoral maior (por��o cla�ic�lar) M. Coracobraq�ial E�tens�o do bra�o M. Delt�ide (por��o escap�lar) M. Lat�ssimo do dorso M. Redondo maior • • •
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FELIX, Fernando �lison M. D.
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����� �� ���������� ��������� ��� ������������ ���������� �������� � ������, � ����� �������� ��� ���������� �� ���� �� ������ ����������?
Prona��o do antebra�o M. Pronador redondo M. Pronador q�adrado S�pina��o do antebra�o M. S�pinador M. B�ceps braq�ial • •
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