Diseases, Conditions, Syndromes

Major differences in the risk of transmission in measles outbreaks

Research that may come to affect contact tracing and infection control measures in future measles outbreaks has now been presented. A study of an outbreak of measles in Gothenburg, Sweden, a year ago shows large differences ...

Medical research

Inhaled nanoparticles could treat lung cancer

QUT pharmaceutical scientist Dr. Nazrul Islam, from School of Clinical Sciences, said lung cancer was one of the most common cancers globally and one of the deadliest, being a leading cause of cancer deaths.

Diseases, Conditions, Syndromes

Respiratory microbiome may influence your susceptibility to flu

Specific respiratory microbiome communities may be linked to influenza susceptibility, according to a study published January 9, 2019 in the open-access journal PLOS ONE by Betsy Foxman from the University of Michigan, USA, ...

Health

How to prevent and treat a cold

Stuffy or runny noses and sore throats are common signs of a cold and can make us feel miserable, but are there effective ways to treat a cold or even prevent catching one? Baylor College of Medicine's Isabel Valdez offers ...

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Respiratory tract

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