Changes

==Species Differences==

==Species Differences==

*In the '''Dog''' the sinus system is generally poorly developed. The Maxillary sinus is a cavity which freely communicates with the nasal cavity, and is known as the '''Maxillary Recess'''. The Frontal sinus has 3 chambers which drain separately into the [[Nasal Cavity - Anatomy & Physiology|nasal cavity]].

In the '''dog''' the sinus system is generally poorly developed. The maxillary sinus is a cavity which freely communicates with the nasal cavity, and is known as the '''Maxillary Recess'''. The frontal sinus has 3 chambers which drain separately into the [[Nasal Cavity - Anatomy & Physiology|nasal cavity]].

*In the '''Horse''' the Maxillary sinus has caudal and rostral parts which together occupy a large part of the upper jaw. In addition, the horse has ''Sphenopalatine'' and ''Ethmoidal'' sinuses which are of less clinical importance than the ''Frontal, Caudal Maxillary'' and ''Rostral Maxillary Sinuses'' on each side of the [[Skull and Facial Muscles - Anatomy & Physiology#Bones of the Skull|skull]].

 

*'''Cattle''' do not have a fully developed sinus system until the age of 7, by which time it is an extremely complex system.  

In the '''horse''' the maxillary sinus has caudal and rostral parts which together occupy a large part of the upper jaw. In addition, the horse has '''sphenopalatine''' and '''ethmoidal''' sinuses which are of less clinical importance than the '''frontal, caudal maxillary''' and '''rostral maxillary sinuses''' on each side of the [[Skull and Facial Muscles - Anatomy & Physiology#Bones of the Skull|skull]].

In addition to the Frontal sinus, there is a ''Palatomaxillary sinus'' (named because the Maxillary Sinus is continuous with the Palatine Sinus) within the caudal part of the [[Hard Palate|hard palate]] and face, a ''Lacrimal sinus'' within the medial orbit, ''Sphenoidal sinuses'' which lie past the orbit and within the conchae themselves are the ''Conchal sinuses''. The Frontal sinus in cattle has a 'diverticle' for the Cornual Process (horn).

 

*The '''Pig''' has ''Lacrimal, Sphenoid'' and ''Conchal'' sinuses in addition to the Maxillary and Frontal systems.

'''Cattle''' do not have a fully developed sinus system until the age of 7, by which time it is an extremely complex system.

*There are many variations to the entire [[Avian Respiration - Anatomy & Physiology|'''Avian''' respiratory tract]].

In addition to the frontal sinus, there is a '''palatomaxillary sinus''' (named because the maxillary sinus is continuous with the palatine sinus) within the caudal part of the [[Hard Palate|hard palate]] and face, a '''lacrimal sinus''' within the medial orbit, '''sphenoidal sinuses''' which lie past the orbit and within the conchae themselves are the '''conchal sinuses'''. The frontal sinus in cattle has a 'diverticle' for the cornual process (horn).

*The [[Respiration in Non-Homeotherms - Anatomy & Physiology|Respiratory Systems of non-Homeotherms]] are also very different to that of mammals.

 

The '''pig''' has '''lacrimal, sphenoid''' and '''conchal''' sinuses in addition to the maxillary and frontal systems.

 

There are many variations to the entire [[Avian Respiration - Anatomy & Physiology|'''avian''' respiratory tract]].

 

The [[Respiration in Non-Homeotherms - Anatomy & Physiology|respiratory systems of non-homeotherms]] are also very different to that of mammals.

==Links==

==Links==