Respiratory system

This human anatomy illustration sample was designed on the base of Wikimedia Commons files: Organ Systems II.jpg [commons.wikimedia.org/wiki/File:Organ_Systems_II.jpg], and Respiratory system complete en.svg [commons.wikimedia.org/wiki/File:Respiratory_system_complete_en.svg]. This file is licensed under the Creative Commons Attribution 3.0 Unported license. [creativecommons.org/licenses/by/3.0/deed.en] "The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange ... the respiratory surface is internalized as linings of the lungs. Gas exchange in the lungs occurs in millions of small air sacs called alveoli ... In humans ... the anatomy of a typical respiratory system is the respiratory tract. The tract is divided into an upper and a lower respiratory tract. The upper tract includes the nose, nasal cavities, sinuses, pharynx and the part of the larynx above the vocal folds. The lower tract includes the lower part of the larynx, the trachea, bronchi, bronchioles and the alveoli." [Respiratory system. Wikipedia] The human anatomy illustration example "Respiratory system" was created using ConceptDraw PRO software extended with Human Anatomy solution from Health area of ConceptDraw Solution Park.