Evolution of Respiratory Organ System Respiratory System Term Paper

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Evolution of Respiratory Organ System

Respiratory system functions in providing oxygen into cells and transferring the remains of metabolism. The basic respiratory system happens in two main ways: internal and external respiratory system. In internal respiration, organism experience gaseous exchange through the cellular surface, while in the external respiration, every organism has developed typical organs to carry out the process, like fetal membranes, skin surface, and lungs (Campbell, 2001).

Early organism (amoeba) carries out the metabolism process within the cell's organelle. In the mitochondria, organism converts glucose into energy (ATP) with oxygen, and releases CO2 and water.

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The respiratory process exists as gas exchange through cell's phospholipid membrane. This process continues for internal respiration principle in higher organisms.

Through the evolution, organisms have developed different types of respiratory organs, which suit their needs. The organs vary from gills (in fish), lungs (terrestrial organism), and skin (amphibians). Certain organisms may also develop elongation or advanced function of the organs, commonly to adapt to their origins. This is not only a different development of the organ shape, but also a different….....

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