What Is The Mechanism Of Asthma?
How exactly does Asthma affect the body? To understand the mechanism of asthma, it is necessary to have an idea about the normal functioning of the respiratory system and how this disease disrupts this activity. How Does The Normal Airway Function? Airways connect the lungs with the external environment. Extra-pulmonary or upper airway connection includes trachea, larynx, nasopharynx and external nares through which the air comes in and goes out of the body. Intro-pulmonary or lower airways include the bronchial tree. This consists of two bronchi, the right and the left, one for each lung. The bronchi are further sub-divided into bronchioles. There are two types of bronchioles – membranous and respiratory. Gaseous exchange takes place at the respiratory bronchioles level. A normal respiratory system lining consists of cilliary epithelial cells. The cillia propel any foreign body or particle upwards, towards the pharynx. This helps in the removal of any harmful foreign particles. There
