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The respiratory tract begins with the ''nose'' which includes the external nose, internal nasal cavities and [[Paranasal sinuses - Anatomy & Physiology|paranasal sinuses]].
The respiratory tract begins with the ''nose'' which includes the external nose, internal nasal cavities and [[Paranasal sinuses - Anatomy & Physiology|paranasal sinuses]].
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As well as being vital for transport of gases to the [[Cardiorespiratory System - Anatomy & Physiology#Lower Respiratory Tract|lower respiratory tract]], the nasal cavity is also the site for one of the special senses - [[Nose - Anatomy & Physiology|''Olfaction'']].
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As well as being vital for transport of gases to the [[Cardiorespiratory System Overview - Anatomy & Physiology#Lower Respiratory Tract|lower respiratory tract]], the nasal cavity is also the site for one of the special senses - [[Nose - Anatomy & Physiology|''Olfaction'']].
==Structure==
==Structure==