Causes And Effect Of Oxygen Aids

1419 Words Nov 25th, 2015 6 Pages
Oxygen aids in carrying out several cellular processes of energy transformation for life. In many processes, oxygen is consumed when nutrients, such as protein, carbohydrates, or fats are oxidized, and carbon dioxide is produced as the gaseous waste. Respiration is the process by which oxygen is taken from the environment, delivered to the cells, utilized by those cells, and where carbon dioxide is is produced and delivered to the lungs to be excreted. There are three different categories of respiration; external respiration, gas transport, and internal respiration. External respiration is defined as how a person gets oxygen from the environment and excretes carbon dioxide. Gas transport is the process by which oxygen is distributed and carbon dioxide is removed from cells. Lastly, internal respiration consists of the chemical reactions of cellular metabolism where oxygen is consumed and carbon dioxide is produced.
The respiratory system in humans is broken up into an upper and lower division. The upper division consists of the nasal and oral cavities, the throat (pharynx), and the voice box (larynx). The lower division is the system of airways that get progressively smaller that resemble an inverted tree with the wind pipe (trachea), the right and left bronchus, the lobar bronchi, segmental bronchi, subsegmental bronchi, terminal bronchioles, respiratory bronchioles, alveolar ducts, alveolar sacs, and individual alveoli. Gas exchange only occurs in the thin walled parts of…
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