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Respiratory System -The respiratory system's function is to allow gas exchange to all parts
of the body. In humans , the anatomical features of the respiratory system include airways,
lungs, and the respiratory muscles. In humans the respiratory system is divided into two
parts the upper respiratory tract and the lower respiratory tract. The upper respiratory tract
includes the nasal passages, pharynx and the larynx, while the lower respiratory tract is
comprised of the trachea,the primary bronchi and lungs. This category consists of images
of the lungs, trachea and also of the entire respiratory system.
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