①Emphysema is characterized by increased elasticity of the lung tissue and destruction of capillaries feeding the alveoli.
②Emphysema is characterized by loss of elasticity of the lung tissue and construction of structures supporting the alveoli.
③Emphysema is characterized by loss of elasticity of the lung tissue and loss of capillaries feeding the alveoli.
④Emphysema is characterized by loss of elasticity of the tissue and an increase of alpha-antitrypsin.
①The main problem of emphysema is that air gets trapped in the lungs and the patient cannot breathe out.
②The main problem of emphysema is that the patient cannot breathe at all.