Changes

===Nasal conchae===

===Nasal conchae===

Nasal conchae are '''turbinate bones''' that project into the nasal cavity. Their purpose is to increase the respiratory surface area, and to create turbulence within the passing air. This helps to filtrate and warm or cool the air that passes through. They are cartilagenous or ossified scrolls that are covered with mucous membrane, under which is a layer of anastomosing blood vessels.

Nasal conchae are '''turbinate bones''' that project into the nasal cavity. Their purpose is to increase the respiratory surface area, and to create turbulence within the passing air. This helps to filtrate and warm or cool the air that passes through. They are cartilagenous or ossified scrolls that are covered with mucous membrane, under which is a layer of anastomosing blood vessels. There are dorsal and ventral conchae, the dorsal concha extending further into the nasal cavity. The conchae divide the nasal cavity into meatuses, which branch out from a common nasal meatus which is adjacent to the nasal septum. There are three nasal meatuses which branch from the common nasal meatus: '''dorsal''', '''middle''' and '''ventral''':

 

There are dorsal and ventral conchae, the dorsal concha extending further into the nasal cavity. The conchae divide the nasal cavity into meatuses, which branch out from a common nasal meatus which is adjacent to the nasal septum. There are three nasal meatuses which branch from the common nasal meatus: '''dorsal''', '''middle''' and '''ventral''':

'''Dorsal nasal meatus''': The passage between the roof of the nasal cavity and the dorsal nasal concha.  

'''Dorsal nasal meatus''': The passage between the roof of the nasal cavity and the dorsal nasal concha.