Asthma is due to? a. elasticity of lungs is reduced b. degradation of alveolar walls c. branchioles constrict due to muscle spasms d .damaged in diaphragm
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OPTION C
What are bronchial spasms?
When you breathe, air travels through your throat and trachea, which is also known as your windpipe. Then it travels into and out of your bronchial tubes. These tubes extend into your lungs and branch into smaller air passages.
Normally, the muscles surrounding your bronchial tubes are thin and smooth, and they allow air to flow easily. If you have a respiratory problem, such as asthma, these muscles can contract and narrow your airway. When that happens, it’s called a bronchial spasm, or a bronchospasm. During a bronchial spasm
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