Changes

==Introduction==

==Introduction==

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]].

As well as being vital for gaseous transport to the [[Cardiorespiratory System - Anatomy & Physiology#Lower Respiratory Tract|lower respiratory tract]], the nose is also the site for one of the special senses - [[Special Senses - Olfactory - Anatomy & Physiology|''Olfaction'']].

As well as being vital for transport of gases to the [[Cardiorespiratory System - Anatomy & Physiology#Lower Respiratory Tract|lower respiratory tract]], the nose is also the site for one of the special senses - [[Special Senses - Olfactory - Anatomy & Physiology|''Olfaction'']].

==Structure==

==Structure==

*The nose consists of the external nares with nasal cartilages, the nasal cavity (including the nasal meatus and conchae), and the paranasal sinuses.

*The nose consists of the external nares with nasal [[Bones and Cartilage - Anatomy & Physiology#Structure and Function of Cartilage|cartilages]], the nasal cavity (including the nasal meatus and conchae), and the paranasal sinuses.

*The nasal cavity is essentially a tube with a wall established by several bones of the skull. The borders of the nasal cavity are as follows:

*The nasal cavity is essentially a tube with a wall established by several bones of the skull. The borders of the nasal cavity are as follows: