A lung is not composed of tubular structures and alveoli bound together by fibrous connective tissue. Rather, a lung is an organ that consists of a complex network of bronchial tubes, blood vessels, and alveoli (tiny air sacs). The bronchial tubes branch out like a tree, starting from the trachea (windpipe) and dividing into smaller and smaller tubes called bronchioles. The bronchioles lead to clusters of alveoli, which are the primary sites of gas exchange in the lungs. The alveoli are surrounded by capillaries, where oxygen from the inhaled air enters the bloodstream and carbon dioxide is removed. The lung tissue is mainly composed of elastic tissue and supported by a framework of connective tissue, rather than being bound together by fibrous connective tissue.
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A lung is not composed of tubular structures and alveoli bound together by fibrous connective tissue. Rather, a lung is an organ that consists of a complex network of bronchial tubes, blood vessels, and alveoli (tiny air sacs). The bronchial tubes branch out like a tree, starting from the trachea (windpipe) and dividing into smaller and smaller tubes called bronchioles. The bronchioles lead to clusters of alveoli, which are the primary sites of gas exchange in the lungs. The alveoli are surrounded by capillaries, where oxygen from the inhaled air enters the bloodstream and carbon dioxide is removed. The lung tissue is mainly composed of elastic tissue and supported by a framework of connective tissue, rather than being bound together by fibrous connective tissue.