Changes

*The paranasal sinuses are a series of cavities arranged one after another.

*The paranasal sinuses are a series of cavities arranged one after another.

*All species have ''Frontal'' and ''Maxillary'' systems

*All species have ''Frontal'' and ''Maxillary'' systems

**Frontal: consists of space(s) within the bones between the cranial cavity and the [[Nasal cavity - Anatomy & Physiology|nasal cavity]].

**''Frontal'': consists of space(s) within the bones between the cranial cavity and the [[Nasal cavity - Anatomy & Physiology|nasal cavity]].

**Maxillary: this is the largest sinus, and consists of the space within the caudolateral part of the upper jaw, above the caudal cheek [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]]. This increases with age due to wearing and ventral relocation of the [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]].

**''Maxillary'': this is the largest sinus, and consists of the space within the caudolateral part of the upper jaw, above the caudal cheek [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]]. This increases with age due to wearing and ventral relocation of the [[Oral Cavity - Teeth & Gingiva - Anatomy & Physiology|teeth]].

==Function==

==Function==