Hematose

Hematose
Sistema Respiratório

Nos capilares adjacentes aos alvéolos pulmonares há troca de gases entre o sangue venoso pobre em oxigênio e o ar alveolar.
Sinônimos "Troca Gasosa Pulmonar"
Fundamentos Físico-químicos difusão, pressão parcial

Hematose é a transformação do sangue pobre em oxigênio em sangue rico em oxigênio que ocorre nos pulmões, através de uma troca de gases que ocorre devido à diferença de concentração de oxigênio (O2) e dióxido de carbono (CO2) por um processo conhecido como difusão.

A difusão é a passagem de substâncias de uma área onde estão em maior concentração para uma área em que estão em menor concentração (sangue arterial para venoso). Como nos alvéolos a concentração de oxigênio está maior, ele se difunde para o sangue que fica nos pulmões. E como no sangue que chegou nos pulmões a concentração de dióxido de carbono era maior, este se difunde dos capilares para os alvéolos. Essa transformação do sangue rico em dióxido de carbono em sangue rico em oxigênio é conhecida como hematose.[1]

Referências

  1. ↑ «Hematose: definição, como ocorre e importância». Toda Matéria. Consultado em 18 de fevereiro de 2019 
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