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Exhalation is the flow of breath out of an organism, mainly to get rid of carbon dioxide. Learn about the anatomy, physiology, and measurement of exhalation, as well as the effects of diseases and smoking on lung function.
Ventilation–perfusion coupling is the relationship between ventilation and perfusion processes, which take place in the respiratory system and the cardiovascular system. [1] Ventilation is the movement of gas during breathing, and perfusion is the process of pulmonary blood circulation , which delivers oxygen to body tissues. [ 2 ]
Learn how the diaphragm, intercostal muscles, and accessory muscles contribute to inhalation and exhalation. The diaphragm is the major muscle for breathing, while the intercostal muscles and accessory muscles assist in expanding and contracting the thoracic cavity.
Breathing is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment. Learn how breathing is controlled by muscles, how it affects the body's pH and temperature, and what are its other functions such as speech and expression.
Learn about the structure, function and development of pulmonary alveoli, the tiny air sacs in the lungs where gas exchange takes place. Find out how alveoli are formed, what cells line them, and how they differ from other vertebrates.
Learn about the movement of oxygen and carbon dioxide in and out of the body, and the mechanisms of gas exchange in different species and conditions. Find out how respiration differs from cellular respiration, and explore the topics and experiments related to respiration.
The respiratory system is a biological system for gas exchange in animals and plants. It consists of specific organs and structures, such as lungs, airways, gills, or stomata, that vary depending on the size, environment, and evolution of the organism.
Ventilation facilitates respiration. Respiration refers to the utilization of oxygen and balancing of carbon dioxide by the body as a whole, or by individual cells in cellular respiration. [1] The most important function of breathing is the supplying of oxygen to the body and balancing of the carbon dioxide levels.