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Respiratory sounds, also known as lung sounds or breath sounds, are the specific sounds generated by the movement of air through the respiratory system. [1] These may be easily audible or identified through auscultation of the respiratory system through the lung fields with a stethoscope as well as from the spectral characteristics of lung sounds. [2]
Human hearing underwater is less sensitive with wet ears than in air, and a neoprene hood provides substantial attenuation. When wearing a helmet sensitivity is similar to in surface air, as hearing sensitivity is not significantly affected by the breathing gas or chamber atmosphere composition or pressure. [99]
The oxygen affinity of the blood is related to lung volume. Where the lungs do not represent an oxygen store, the oxygen affinity is low to maximise the unloading of oxygen and to maintain a high tissue oxygen tension. Where the lungs are utilised as an oxygen store, the affinity is high and maximises uptake of oxygen from the alveolar volume. [13]
The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled organ in bony fish (but not cartilaginous fish [1]) that functions to modulate buoyancy, and thus allowing the fish to stay at desired water depth without having to maintain lift via swimming, which expends more energy. [2]
Studies have shown that 50 percent of couples prefer different temperatures while sleeping. Some like it hot while others prefer lower temperatures. But the debate isn't just a relationship ...
It is a subject of research in animals and human clinical trials. As of 2012, the lowest body temperature ever survived by a human being was 9 °C (48 °F) as part of a hypothermic circulatory arrest experiment to treat cancer in 1957. [33] [34] This temperature was reached without surgery, using external cooling alone. Similar low temperatures ...
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We hope these tips help you stay safe if you choose to drink. Listen to the full episode here. And join us next week on the Chasing Life podcast to hear a conversation between Dr. Sanjay Gupta and ...