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Gas Exchange and Circulation

Blood is specialized tissue that transports gases

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Unformatted text preview: of the lung. If your lungs are just lined with water, you would suffocated. This is because hydrogen bonds are very strong. No matter how much air you inhale, the hydrogen bonds will still keep the lungs contracted. For lungs to be capable of expanding, there must be mucus and surfactants (soap). They are anthipathic – both hydrophilic and hydrophobic. Not enough surfactants, and it cannot expand. You’re mostly breathing in oxygen. They are simply diffused; the only thing affecting its trafficking is its gradient. This is not controlled. If Carbon Dioxide is diffused easily, how does it stay in the blood capillary until it is released. When the blood reaches the lung, the concentration of CO2 by then will be really high...
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