gas exchange
[/ɡæs ɪksˈtʃeɪndʒ/]
nounpl: gas exchanges
troca gasosa
1. The process by which oxygen and carbon dioxide are exchanged between an organism and its environment, typically occurring in the lungs or respiratory surfaces
Gas exchange occurs in the alveoli of the lungs where oxygen enters the bloodstream and carbon dioxide is expelled.
A troca gasosa ocorre nos alvéolos dos pulmões, onde o oxigênio entra na corrente sanguínea e o dióxido de carbono é expelido.
2. In aquatic organisms, the transfer of dissolved gases through respiratory structures such as gills
Fish rely on gas exchange through their gills to extract oxygen from water.
Os peixes dependem da troca gasosa através de suas brânquias para extrair oxigênio da água.
3. In plants, the exchange of oxygen and carbon dioxide through stomata for photosynthesis and respiration
Gas exchange in plants occurs primarily through stomata on the leaf surface.
A troca gasosa nas plantas ocorre principalmente através dos estômatos na superfície da folha.
Gas exchange is a fundamental concept in medical and biological education in both Brazil and the United States. In healthcare settings, assessment of gas exchange through blood gas analysis (arterial blood gas or ABG tests) is a critical diagnostic tool. The term is used identically in Portuguese-speaking countries and is part of standard medical terminology in both Brazilian and Portuguese healthcare systems.
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