The reader says the features of the respiratory system and also relates the structural company of the mechanism to that functions.

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Describes the exchange that oxygen and also carbon dioxide v the atmosphere and relates gas exchange come the metabolism of the tissues of the body.Defines the role of the respiratory mechanism in acid-base balance.Lists the nonrespiratory attributes of the lungs.Defines and also describes the alveolar-capillary unit, the site of gas exchange in the lungs.Describes the deliver of gas v the conducting airways to and also from the alveoli.Describes the structural attributes of the airways.Lists the materials of the chest wall surface and relates the functions of the muscle of respiration to the activity of wait into and also out that the alveoli.Describes the central nervous system initiation of breathing and the innervation of the respiratory muscles.


The main attributes of the respiratory mechanism are to obtain oxygen native the outside environment and supply it come the cells and also to eliminate from the human body the carbon dioxide produced by to move metabolism.

The respiratory system is created of the lungs, the conducting airways, the components of the main nervous system concerned with the regulate of the muscles of respiration, and the chest wall. The chest wall surface consists of the muscle of respiration—such as the diaphragm, the intercostal muscles, and also the abdominal muscles—and the rib cage.


The attributes of the respiratory tract system include gas exchange, acid-base balance, phonation, pulmonary defense and metabolism, and also the taking care of of bioactive materials.

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Oxygen indigenous the ambient waiting is exchanged because that carbon dioxide developed by the cells of the body in the alveoli of the lungs. Fresh air, include oxygen, is motivated into the lungs through the conducting airways. The forces causing the wait to circulation are generated by the respiratory tract muscles, acting on regulates initiated by the main nervous system. In ~ the same time, venous blood return from the assorted body organization is pumped right into the lung by the ideal ventricle the the heart. This blended venous blood has actually a high carbon dioxide content and a short oxygen content. In the pulmonary capillaries, carbon dioxide is exchanged because that oxygen native the alveoli. The blood leaving the lungs, i m sorry now has a high oxygen content and also a fairly low carbon dioxide content, is dispersed to the organization of the human body by the left next of the heart. During expiration, gas with a high concentration the carbon dioxide is expelled from the body. A schematic diagram of the gas exchange role of the respiratory device is displayed in number 1–1.