proctodeum and vent

[cerivs]

There should probably be a relationship between the proctodeum, vent and the cloacal chamber and gut. Need to figure out and add relationships.

Original comment by: cerivs

[cerivs]

We have some preliminary documentation of subdivisions of the digestive tract across vertebrates here:

http://purl.obolibrary.org/obo/uberon/references/reference\_0000034

Comments welcome!

A few notes on the multi-species representation that may inform yours, hopefully we can be logically and terminologically consistent:

- "gut" is often used ambiguously. I prefer digestive tube or tract (a la Kardong)

• is "vent" a syn for "cloaca" (as in XAO)?
• in ZFA "cloacal chamber" is an anatomical space. Is this what you mean?
• Kardong defines the proctodeum as "Most distal cloacal compartment" but ZFA seems to use this in the sense of an embryonic proctodeum. In some amniotes the cloacal chamber is divided into 3

In uberon we distinguish between

- cloaca - the actual chamber, a multi-tissue structure

• cloacal vent - a subtype of orifice (I prefer this to "vent" which is also a gene name!)
• cloacal lumen - an anatomical space, what ZFA calls the cloacal chamber

Original comment by: cmungall

[cerivs]

made new structure cloaca and cloaca epithelium make cloacal lumen exact synonym for cloacal chamber cloaca is part_of gut (alimentary tract mouth to vent/anus/cloacal opening) made intestinal opening for where intestine empties into cloaca.

Original comment by: cerivs

[cerivs]

Still need to figure out vent/anus/urogenital opening relationships and make structures. Issue confused by sloppy use of terms by researchers and only experimental data from young fish.

Original comment by: cerivs

[cerivs]

• assigned_to: Ceri
• Group: -->

Original comment by: cerivs