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www.reference.com/article/respiratory-system-d102e5e0695675f8

The respiratory system is a group of organs that provide the body with oxygen. Oxygen is needed for cells in the human body to live.

www.reference.com/article/respiratory-system-work-efb7efbe82695b2b

The respiratory system draws in fresh air from the environment, exchanges oxygen for waste gases in the lungs and expels the spent air back into the environment before taking another breath. The oxygen is then circulated through the body to fuel the metabolism of the ce...

www.reference.com/article/function-respiratory-system-3cdbc8ff623fcb8a

The primary function of the respiratory system is to provide oxygen to every part of the body through the process of inhaling oxygen and exhaling carbon dioxide. The respiratory system consists of tissues and organs inside the body that allow people to breathe. This sys...

www.reference.com/article/charging-system-diagram-90faa7488ed96eb4

A charging system diagram is a pictorial representation of the components of a vehicle's charging system, their arrangement and the wiring involved. The main elements of the charging system include the battery, alternator and regulator.

www.reference.com/article/cooling-system-diagram-ea375b0283c6bed4

A cooling system diagram is an illustration of the heating, ventilation and cooling systems within a certain indoor space and outlines the route of air from the intake through the air supply duct. Cooling systems utilize refrigerant coils to cool the air and fans and du...

www.reference.com/article/purpose-respiratory-system-350c5c2a6811aafc

According to the Franklin Institute, the main purpose of the respiratory system is to supply oxygen to the blood, which delivers oxygen to all parts of the body. This is performed through respiration (i.e., breathing), which involves inhaling oxygen and exhaling carbon ...

www.reference.com/article/diseases-respiratory-system-d32c54e8dea8f19e

Some common respiratory diseases include asthma, cystic fibrosis, chronic bronchitis and emphysema. Smoking, infections and genetics are responsible for most diseases of the respiratory system, according to WebMD.