| SECTION | Item or Ref ID | Value or text | 
| Identification | 
| TA code | A06.1.02.003 | 
| Entity ID number | THA:9412 | 
| FMA identifier | FMA:76585 | 
| Type of entity | Immaterial entity | 
| Language | 
| TA98 Latin preferred term | choana | 
| TA98 Latin precursor term | choanae | 
| TA98 English equivalent | choana | 
| TA98 English synonym | posterior nasal aperture | 
| TA98 English source term | choanae | 
| Properties | 
                Bilaterality
             | 
            This entity has left and right instances. | 
                Immaterial
             | 
            This entity is an immaterial object (no mass). | 
| Notes | 
| TA98 RAT note | The Latin precursor choanae was a plural term, which is not consistent with the rules of Regular Anatomical Terminology. The convention in Terminologia Anatomica is that entities that are left and right pairs are represented by a singular term. | 
| TA98 Hierarchy | 
| A01.0.00.000 | 
| A06.0.00.000 | 
| A06.1.01.001 | 
| A06.1.02.001 | 
| A06.1.02.003 | 
               
                choana
               
             | 
          
| FMA Taxonomy | 
| FMA:62955 | 
               
                anatomical entity
               
             | 
          
| FMA:61775 | 
               
                physical anatomical entity
               
             | 
          
| FMA:67112 | 
               
                immaterial physical anatomical entity
               
             | 
          
| FMA:71917 | 
               
                set of immaterial physical anatomical entities
               
             | 
          
| FMA:71918 | 
               
                set of anatomical spaces
               
             | 
          
| FMA:76585 | 
               
                set of choanae
               
             | 
          
| Date: 29.01.2013 |