PathophysiologyThere are a number of different mechanisms that protect the lungs from infection. Inhaled air is filtered in the nose. The lower respiratory tract are protected thanks to the epiglottis and larynx. Strange things from entering the respiratory tract under imprisoned out thanks to reflective particles than cough., can penetrate deeper into the gas were to stick to walls, bronchial mucous carpet thanks to gas on the epithelial layer are moved and then was moved up to be escorted out. These small particles down to be be dealt with by alveolar macrophages in the alveoli and immune mechanism in place. The grain phagocytes by alveolar macrophages will be shipped out by white alveolar artery. Any confusion about Anatomy or physiology related to this protection mechanism are made easy-infested lung.If the defense mechanisms of the Airways unable to eliminate the virus out of the respiratory tract, the virus will settle in the upper respiratory tract and then spread down under. When infected with the virus, the activity of epithelial systems are moving disorders, leading to the stagnant secretions and air congestion.Inflammatory response related to viral infections including the infiltrates the lymph in single layer under the mucosa and approximately around the circuit, can lead to bronchial crush congestion. The bronchial smooth muscle spasms usually occur during the inflammatory response. The changes led to the obstruction of lung collapses and gas due to minor congestion completely bronchus (typical in bronchiolitis).The influence to the alveolar type II cells in viral pneumonia leads to reduced production of surfactant, hyaline membrane formation, and edema of the lungs. Pneumonia is a result of the reproduction of the virus and the inflammatory process in the alveoli. The transformation just tell also reduces the gas exchange in the alveoli lack blood gases.
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