Órgãos
Autor: nátalle araújo ;* | Publicado: 2011-04-14T11:28:00-07:00

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Órgão é um grupo de tecidos que performa uma função específica ou grupo de funções. O tecido principal é um aquele que é único para um órgão específico. Por exemplo, o tecido principal no coração é o miocárdio, enquanto os esporádicos são os nervos, sangue, tecido conjuntivo, etc. Um conjunto de órgãos com funções relacionadas chama-se um sistema.
Um grupo de órgãos relacionados compõe um sistema orgânico. Órgãos possuindo um sistema podem ser relacionados em inúmeras formas, mas funções relacionadas são na maioria comumente usadas. Por exemplo, o sistema urinário compreende órgãos que trabalham juntos para produzir, guardar e transportar a urina.
As funções dos sistemas orgânicos muitas vezes compartilham significantes justaposições. Por exemplo, os sistemas nervoso e endócrino operam através de uma partilha de ambos os órgãos, o hipotálamo.&nbsp;