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write about the physiology of respiration .
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Answers
Answer:
In physiology, respiration is the movement of oxygen from the outside environment to the cells within tissues, and the transport of carbon dioxide in the opposite direction.
The physiological definition of respiration differs from the biochemical definition, which refers to a metabolic process by which an organism obtains energy (in the form of ATP) by oxidizing nutrients and releasing waste products. Although physiologic respiration is necessary to sustain cellular respiration and thus life in animals, the processes are distinct: cellular respiration takes place in individual cells of the organism, while physiologic respiration concerns the diffusion and transport of metabolites between the organism and the external environment.
In animals with lungs, physiological respiration involves respiratory cycles of inhaled and exhaled breaths. Inhalation (breathing in) is usually an active movement. The contraction of the diaphragm muscle cause a pressure variation, which is equal to the pressures caused by elastic, resistive and inertial components of the respiratory system. In contrast, exhalation (breathing out) is usually a passive process. Breathing in, brings air into the lungs where the process of gas exchange takes place between the air in the alveoli and the blood in the pulmonary capillaries
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❤Answer:
✨The ultimate function of the respiratory system is gas exchange.4 This gas exchange consists of obtaining O2 from the atmosphere and removing CO2 from the blood. It is important to consider that O2 is necessary for normal metabolism and CO2 is a waste product of this metabolism. CO2 is only inhaled in negligible quantity and thus the CO2 we exhale is created within the body. While CO2 plays a role in acid-base balance, it must be cleared from the body in appropriate levels through ventilation.
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