células e tecidos do
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CÉLULAS e TECIDOS do
SISTEMA IMUNOLÓGICO Profa Dra. Michelle Guerreiro
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equilíbrio
Resposta Imune
Agressãodefesa
Homeostase
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IMUNIDADE INATA X ADAPTATIVA
Primeira linha de defesa, ocorre logo após a infecção
Dependente da resposta inata, ocorre horas depois
Reconhece estruturas comuns a famílias de microorganismos
Especificidade extraordinária
Não estabelece memória Estabelece memória
Constituída de sistemas de barreiras, sistema complemento e células fagocitárias, (inflamação).
Constituída de uma resposta linfocítica e por produção de anticorpos
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Origem das células do Sistema Imune
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TIMO
MEDULA ÓSSEAVasos Linfáticos
Gânglios linfáticos(linfonodos)
Órgãos LinfóidesGeradores
(ou primários)Órgãos Linfóides
Secundários
Baço
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Hematopoese
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Células do Sistema Imune
Hemácias (eritrócitos) Plaquetas Basófilos Eosinófilos Neutrófilos Monócitos
Linfócito T
Célula NK
Célula- tronco Progenitor
linfóideProgenitor
mielóide
Linfócito B
Timo
MEDULA ÓSSEA
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Linfócito T
Linfócito B
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Peripheral lymphoid organs and other stuff
*other stuff (not peripheral lymphoid organs)
Blood circulation
Heart
capillaries
Órgãos linfóides periféricos
1. trap antigens
2. are the sites for initiation of most immune response
3. provide signals for recirculation of lymphocytes
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O FLUXO da LINFA pelos vasos linfáticos
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Fluxo da linfa vindo
do espaço intersticial
Para o ducto torácico
GÂNGLIO LINFÁTICO
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Tobias Junt, Elke Scandella and Burkhard Ludewig, 2008; Nature Reviews.
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Central (primary) lymphoid organs are the sites for generation and early maturation of lymphocytes (B and T cells)
T cells mature in the thymus
Central lymphoid organs
B for bursa of Fabricius (a lymphoid organ in birds)[After Hieronymus Fabricius (1537-1619), Italian anatomist]
(T for thymus)
B cells mature in the bone marrow