Tecido Conjuntivo
Autor: Natal Skeptics | Publicado: 2011-11-03T10:47:00-07:00

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Composição:Matriz -&gt; Substância fundamental amorfa
Células -&gt; leucócitos, adipócitos, mastócitos(libera heparina anticoagulante e histamina vaso dilatador liberada em inflamações e alergias), células mesenquimatosas(células tronco, somáticas, indiferenciadas com certa diferenciação usadas na cicatrização), Fibroblastos(plaquetas).As fibras do tecido conjuntivo são elásticas, colágenas e reticulares.Colágenas -&gt; resiste a tensões, compõem os tendões e liga músculos a osso. È sintetizada através da vitamina C.
Tipos de tecido conjuntivo:Frouxo -&gt; preencher espaços, nutrir o epitelial, defesa e cicatrização (Derme)
nutri através de vasos e trocas gasosas, defende secretando substancias e cicatriza utilizando vitamina K e Cálcio(Ca++).
Denso-&gt; constitui os fibroblastos, existe o modelado com feixes paralelos(tendões) e não modelado, com feixes entrelaçados(derme) o que caracteriza a rigidez ou elasticidade dos tecidos é a proporção de elastina e colágeno presentes.
Tecido Reticular ou Hematopoiético(se for na medula mielóide) -&gt; as células que compõem esse tecido são as células sanguíneas, hemácias leucócitos e plaquetas.
Linfóide -&gt; macrófagos e plasmócitos De consistência rígida(ossos e cartilagens) -&gt; cartilaginoso(sem vasos e nervos), Osseo(vasos, fosfato, cálcio, colágeno, ou seja deficiência de vitamina D e C trará problemas).
Ósseo primário -&gt; criança, ou normal se fraturar é regenerado com primário, fibras desorganizadas
secundário -&gt; colágeno em fibras paralelas e organizadas
Canal de Havers Canal que passa pelo meio das fibras que constituem o osso
Canal de volkman liga 2 canais de havers
Medula óssea(geralmente na extremidade do osso adultos transformam a maioria em amarela, que contém gordura)
Leucemia (câncer de sangue) – produção exagerada de células defeituosas sanguineas