Air sacs

... use anywhere near our lung capacity; for the most part, we just use the air sacs at the bottom of the lungs. If the air sacs, called alveoli, don’t get fresh air, they ...

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... simply move the esophagus in front of (anterior to) the trachea so the air pathway and the food/water pathway don't cross each other. Avian respiratory ... isn't trapped easily like the back of our pharynx. A system of air sacs then direct air through the lung in only one direction which keeps ...

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... pain that humans are so prone to. Only an idiot would have the path of air into the lungs cross the path of food and water into the stomache. Serious ... very inefficient. Birds have a better system that uses a series of air sacs to push air through the lung in only one direction. Heck if I was ...

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... kangaroos have red sweat. Birds resort to panting, losing water from air sacs. Dogs also adopt panting. Their tongue has rich blood supply from where water is evaporated. ...

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... used in variety of biomedical applications, most prominently as blood sacs in ventricular-assist devices and total artificial hearts. However, ... these biocompatible materials is their relatively high permeability to air and water vapor. In this presentation, we will describe a nanocomposite ...

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