Answer: (Medical Xpress)—Asthma is a debilitating condition that kills 250,000 people around the world each year. People with asthma have hyperreactive airways and thickened lung walls obstructed with mucus. During an asthma attack, which could be fatal, airways constrict even further in the presence of a trigger, such as pollen, dust mites or a viral infection. Current asthma therapies treat asthma attacks as immune responses and focus on immune system suppression. However, a study by Dimitri Trankner of Howard Hughes Medical Institute in Virginia and his colleagues, published in the Proceedings of the National Academy of Sciences, shows that sensory neurons control bronchial hyperactivity.
The ends of the femur are covered in a smooth, slippery substance called articular cartilage. This cartilage protects and cushions the bone when you bend and straighten your knee. The normal anatomy of the knee.
