A new study from India raises questions about the dangers to human health of farming chicken with growth-promoting antibiotics—including some of the same drugs used in raising millions of chickens in the United States and ...
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Giving children high doses of vitamin D doesn't appear to reduce the winter sniffles, a new study has found.
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Vaccines to combat a virus that can lead to fatal lung infections are urgently needed to help prevent child deaths worldwide, research suggests.
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Infections during infancy are associated with increased risk for gluten intolerance (celiac disease) later on. Apparently the risk is particularly high in the case of repeated gastrointestinal infections in the first year ...
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The virus that causes chickenpox—varicella zoster virus (VZV)—possesses a protein that could enhance its ability to hijack white blood cells and spread throughout the body, according to new research published in PLOS ...
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Many childhood virus infections are mistaken for bacterial infection and risk being unnecessarily treated with antibiotics. A new thesis from Karolinska Institutet on respiratory infections in children shows that viruses ...
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The risk of having a heart attack is 17 times higher in the seven days following a respiratory infection, University of Sydney research has found.
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Lactate produced in the upper throat might trigger meningitis-causing bacterial cells to detach from tiny colonies and spread within the body, according to a new study published in PLOS Pathogens.
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Deaths among children and adolescents decreased worldwide from nearly 14.2 million deaths in 1990 to just over 7.2 million deaths in 2015 but this global progress has been uneven, according to a new article published online ...
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The common cold is a major source of annoyance for most of us, but new research has found that the most prevalent respiratory infection can be far worse than a stuffy nose for one sector of the population—bone marrow transplant ...
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In humans the respiratory tract is the part of the anatomy that has to do with the process of respiration.
The respiratory tract is divided into 3 segments:
The respiratory tract is a common site for infections. Upper respiratory tract infections are probably the most common infections in the world.
Most of the respiratory tract exists merely as a piping system for air to travel in the lungs; alveoli are the only part of the lung that exchanges oxygen and carbon dioxide with the blood.
Moving down the respiratory tract starting at the trachea, the tubes get smaller and divide more and more. There are estimated to be about 20 to 23 divisions, ending up at an alveolus.
Even though the cross-sectional area of each bronchus or bronchiole is smaller, because there are so many, the total surface area is larger. This means there is less resistance at the terminal bronchioles. (Most resistance is around the 3-4 division from the trachea due to turbulence.)
This text uses material from Wikipedia, licensed under CC BY-SA
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