Best 14 who was the first person to breathe air

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who was the first person to breathe air

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Invention Allows Humans to Breathe Like Fish | Live Science

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  • Summary: Articles about Invention Allows Humans to Breathe Like Fish | Live Science Alan Izhar-Bodner, an Israeli inventor, has developed a way for divers to breathe underwater without cumbersome oxygen tanks.

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How Did Life Learn to Breathe? – Eos.org

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  • Summary: Articles about How Did Life Learn to Breathe? – Eos.org A man exhales in a forest … And in clearing the air surrounding the oxygen breathing mystery, the current research also helps solve …

  • Match the search results: Such levels would have been helpful to early microbes, which scientists think breathed N2O, just as many microbes still do today. Two enzymes that enable N2O-respiring organisms to breathe “came together and created what became cytochrome c oxidase,” Glass said, which is the enzyme that enables oxyg…

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The man who taught humans to breathe like fish – National …

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  • Summary: Articles about The man who taught humans to breathe like fish – National … Jacques Cousteau’s invention of the Aqua-Lung opened the undersea realm to scientists and the public.

  • Match the search results: But the ability to plumb the depths exposed divers to other dangers. Although the Aqua-Lung made it easier to breathe by balancing ambient and internal pressure, it couldn’t prevent what’s known as rapture of the deep—nitrogen narcosis, when the nervous system becomes saturated with nitrogen as the …

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The air we breathe, Oxygen was discovered today: Some facts

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  • Summary: Articles about The air we breathe, Oxygen was discovered today: Some facts The French Chemist, Antoine Laurent Lavoisier became the first chemist to see ‘Oxygen’ as an element. He conducted many experiments and …

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How Do We Breathe? – Scientific American

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  • Summary: Articles about How Do We Breathe? – Scientific American We get oxygen by breathing in fresh air, and we remove carbon dioxide … The air then follows the windpipe, which splits first into two …

  • Match the search results: We can also breathe more forcefully. When we exercise, sing loudly or otherwise need or want more air or oxygen we can exert force to breathe more deeply. We use various muscles to increase chest volume more dramatically. In the same way as in relaxed breathing the expansion of the chest cavity draw…

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Every breath you take: the process of breathing explained

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  • Summary: Articles about Every breath you take: the process of breathing explained Breathing is central to life, as it allows the human body to obtain … Our lungs supply oxygen from the outside air to the cells via the …

  • Match the search results: Our lungs supply oxygen from the outside air to the cells via the blood and cardiovascular system to enable us to obtain energy. As we breathe in, oxygen enters the lungs and diffuses into the blood. It is taken to the heart and pumped into the cells. At the same time, the carbon dioxide waste from …

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How We Breathe – Craig Hospital

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  • Summary: Articles about How We Breathe – Craig Hospital The role of the respiratory system is to breathe in oxygen and breathe out carbon … your chest expands and pulls air into the lungs; this is inhaling.

  • Match the search results: The role of the respiratory system is to breathe in oxygen and breathe out carbon dioxide. This is known as respiration. The cells of the body use oxygen to perform functions that keep us alive. The waste product created by the cells once they have performed these functions is carbon dioxide. The re…

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human respiratory system – The mechanics of breathing

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  • Summary: Articles about human respiratory system – The mechanics of breathing Air moves in and out of the lungs in response to differences in pressure. … results until pressure equilibrium is reached at the original lung volume.

  • Match the search results: The forces that normally cause changes in volume of the chest and lungs stem not only from muscle contraction but from the elastic properties of both the lung and the chest. A lung is similar to a balloon in that it resists stretch, tending to collapse almost totally unless held inflated by a pressu…

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Why do you breathe? – British Lung Foundation

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  • Summary: Articles about Why do you breathe? – British Lung Foundation It then relaxes back into a dome position when you breathe out, reducing the amount of air in your lungs. When you exercise, your abdominal muscles are used to …

  • Match the search results: The system works so that you breathe in and out comfortably at rest where the least effort is required to move air – and you’re probably not conscious of your breathing. When you exercise, you need to move more air. To do this you can take bigger breaths or breathe more quickly – usually both.

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Breathing – Health Video: MedlinePlus Medical Encyclopedia

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  • Summary: Articles about Breathing – Health Video: MedlinePlus Medical Encyclopedia The first phase is called inspiration, or inhaling. When the lungs inhale, the diaphragm contracts and pulls downward. At the same time, the …

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    A.D.A.M., Inc. is accredited by URAC, for Health Content Provider (www.urac.org). URAC’s accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online healt…

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Breathing difficulties – first aid – MedlinePlus

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  • Summary: Articles about Breathing difficulties – first aid – MedlinePlus People with certain illnesses may have breathing problems that they … of breath; Being unable to take a deep breath and gasping for air …

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    A.D.A.M., Inc. is accredited by URAC, for Health Content Provider (www.urac.org). URAC’s accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online healt…

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Can Humans Breathe Liquid Like in The Abyss? – Today I …

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  • Summary: Articles about Can Humans Breathe Liquid Like in The Abyss? – Today I … The first experiments with liquid breathing were conducted shortly … of air a diver or escaping submariner could breathe an oxygenated …

  • Match the search results: Tarantola, Andrew, Can Humans Breathe Liquid? Gizmodo, August 27, 2013, https://gizmodo.com/can-humans-breathe-liquid-1156138301

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The human story of how ventilators came to breathe for us

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  • Summary: Articles about The human story of how ventilators came to breathe for us Air could get into the box only through the patient’s mouth and nose. This was the first mechanical negative pressure ventilator, forcing the …

  • Match the search results: Today, these basics of human respiration and metabolism feel obvious – and ventilators, the machines that breathe for sick people, do, too. We have so many medical devices, so of course we’d need, and have, machines that help us to breathe. But there’s a strange, and deeply human, story behind how w…

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Diving and oxygen – PMC – NCBI

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  • Summary: Articles about Diving and oxygen – PMC – NCBI If the partial pressure of nitrogen is doubled (by breathing air at 10 m depth) … person with no special training can hold his (or her) breath for about …

  • Match the search results: Oxygen rebreathers allow divers to breathe 100% oxygen but carbon dioxide accumulation can be a problem

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Multi-read content who was the first person to breathe air

As far as we know, life has existed on Earth for about 3.5 billion years. Early in this history, organisms evolved the ability to breathe oxygen.

“Life respects other things like nitrous oxide over oxygen.”

What factors led to this development? The answers are still vague, but in the new study, geoscientists may have uncovered an important piece of the puzzle: nitrous oxide (N2O), better known as laughing gas, once formed an important part of the earth’s atmosphere. This gas helped lay the foundation for organisms to eventually develop the abilitybreathe oxygen, the researchers suspected.

It’s likely that “life respects other things like nitrous oxide over oxygen,” he saysjennifer glass, a biochemist at the Georgia Institute of Technology in Atlanta who led the new work. Although scientists havedoubt thisBefore that, through research by Glass and her team, we now have a mechanism for how nitrous oxide first existed in the ancient atmosphere.

And by ridding the surrounding atmosphere of the mystery of oxygen breathing, the current study also helps solve another geological mystery: the “faint young sun paradox.”

Its irony

For their research, Glass and her team attempted to reconstruct ancient seawater chemistry from between 1.6 and 1.0 billion years ago. Back then, the team called in last monthbiogeography, the oceans differed from those of today in one important respect: they contained a lot of dissolved iron.

In their lab experiments, the team filled the bottles with oxygen-free artificial seawater. Then they added iron to seawater and found that iron motivated women2to form O. Their tests showed that iron reacts with nitrogen in seawater to form N in a process known as denitrification2The O gas then bubbled out of the water and into the air. Previously it was thought that denitrification – the process of turning dissolved nitrogen ions into gas – was only possible by organisms, but Glass’s team discovered a way to make it possible in a non-biological way.

This abiotic denitrification process explains “how to get more nitrous oxide around for organisms to breathe,” says Glass. Such a chemical reaction would not be common today because the oceans do not contain nearly enough dissolved iron. The reason there’s no iron, Glass added, is because there’s a lot of oxygen in the atmosphere today. This oxygen reacts with iron in seawater (in the same reaction that produces rust), creating solid iron oxides that form and settle on the sea floor.

Formation of an iron gang in Australia. These iron-rich rocks formed about 2.5 billion years ago. Before the rock formed, this iron was dissolved in seawater. The researchers report that dissolved iron was key in blowing nitrous oxide out of ancient oceans and making gas available for microorganisms to breathe. As oxygen levels rise, iron falls out of solution, creating the thick deposits seen here. Credit: Georgia Tech/Jennifer Glass

Blurred timeline 

But before atmospheric oxygen rose to today’s levels, N2O accumulates in the atmosphere. By calculating the rate at which N2O is formed during their laboratory experiments, Glass and her team determined that the ancient atmospheric values ​​were possibly 10 times higher than today’s atmospheric values, which are around 0.00003%.

“The enzyme that is important for us to breathe oxygen comes from denitrification.”

Such a conclusion would beUsefulfor the original bacteria that scientists believe inhaled N2O, as many bacteria do today. Two enzymes that activate N2Organisms that breathe oxygen, Glass said, “combine and produce what becomes cytochrome c oxidase,” the enzyme that allows organisms like us to breathe oxygen.

In other words, “The enzyme that’s important for us to breathe oxygen somehow comes from denitrification,” says Glass.

Strengthening the evidence that this is exactly how oxygen breathing evolves is not so easy, however, explainsAubrey Zerkle, a biochemist at the University of St Andrews in Scotland, who was not involved in the new study.

“We have irrefutable evidence that oxygen existed around this time,” she said. From the fossil record and other studies, she explains, we know that “life certainly produces and breathes oxygen.”

If oxygen was already in the air and life breathed it, the ability to breathe oxygen might have evolved before N.2O arrived at the crime scene. Whether that is the case, said Zerkle, is “very difficult to test”. “The question is the sequence of evolutionary events – whether this2Respiratory O] develops before or after oxygen respiration. ”

Under the dim sun

These evolutionary changes occurred amidst the faint paradox of the young Sun. The first dayfabricateby astronomer Carl Sagan in 1972, the term refers to about 10% less luminous distance from the Sun than today. Scientists argue that the Earth almost froze over in such dim light, but that’s not the case. Why?

“It’s an interesting ingredient in the cocktail of what makes Earth habitable.”

Again, the answer may lie in FEMALE2O, Glass explained. WOMEN2O is an extremely powerful greenhouse gas that can contribute in the least to warming a planet. And then2The O concentration calculated by the team, she added, corresponds to an increase in atmospheric temperature of about 3°C ​​to 5°C: a heat gain large enough to regulate the planet’s temperature and prevent the global ice age.

“It’s an interesting ingredient in the cocktail of what makes Earth habitable,” he saysNoah Planavsky, a biochemist at Yale University who was not involved in this work. Planavsky added that figuring out how Earth maintains its “gap” as it basks in the weak Sun’s rays is a challenge.protracted problemfor researchers, but this new study reveals one of the likely mechanisms at work.

WOMEN2O as a heating mechanism under an immature Sun “is something that people haven’t considered before,” Zerkle said. “I don’t think it’s a smoke cannon,” she added, because it’s hard to tell how much one factor has helped keep the earth warm. But at least for now, part of the paradox seems to have been cleared up.

—Lucas Joel (email:[email protected]), freelance journalist

Quote:

Joel, L. (2018), How does life learn to breathe?,Eos, 99,https://doi.org/10.1029/2018EO106147. Released September 17, 2018.

Text © 2018. Authors.CC BY-NC-ND 3.0
Unless otherwise noted, the images are protected by copyright. Any re-use without the express permission of the copyright holder is prohibited.

RelatedTurf’s Dirty Little Secret Counting the Ocean

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keywords: #dinos, #paleo, #paleontology, #scishow, #eons, #pbs, #pbsdigitalstudios, #hankgreen, #johngreen, #complexly, #fossils, #naturalhistory, #arthropods, #fish, #breathing, #air, #lungs, #gills, #Eusthenopteron, #Ichthyostega, #Tiktaalik, #lobe-finnedfish, #spiraculartract, #bichir, #mudskipper, #tetrapodomorphs, #swimbladder, #Devonian, #Oxygen, #skull-hole, #oceans

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385 million years ago, a group of fish would undertake one of the most important journeys in the history of life and become the first vertebrates to live on dry ground. But first, they had to acquire the ability to breathe air.

Thanks to Ceri Thomas for the Ichthyostega reconstruction. Check out more of Ceri’s paleoart at

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References:

-https://www.nature.com/articles/nature03893

-https://www.nature.com/articles/nature04196

-http://onlinelibrary.wiley.com/doi/10.1002/neu.10129/full

-https://academic.oup.com/icb/article-abstract/47/4/510/632798

-https://www.sciencedirect.com/science/article/pii/S003101820500444X

-https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2936207/

-http://www.academia.edu/download/43683790/The_Miguasha_Fossil-Fish-Lagersttte_a_co20160313-6133-10389ml.pdf

-https://www.nature.com/articles/352234a0

-http://rsos.royalsocietypublishing.org/content/4/3/161030.abstract

-https://www.nature.com/articles/nature04637

-https://www.nature.com/articles/ncomms4022

-https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/gill-morphometry-of-the-mudskipper-boleophthalmus-boddarti/75020B7318843E349EE0109C8C1E98AF

-https://www.nature.com/articles/37918

-https://espace.library.uq.edu.au/view/UQ:9086

-https://www.sciencedirect.com/science/article/pii/003456877090068X

-https://www.nature.com/articles/463040a

-http://www.jstor.org/stable/4133801

-https://www.nature.com/articles/nature08623

-https://www.sciencedirect.com/science/article/pii/S1569904804002022

-http://www.academia.edu/download/30666810/nature11124.pdf

-http://www.pnas.org/content/111/3/893.full

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