Term: post-vent region mesenchyme
Name: post-vent region
Synonyms: tail
Definition: Organism subdivision which is the part of the body posterior to the vent which includes the anal and caudal fins.
Ontology: Anatomy Ontology [ZFA:0001117]

Name: mesenchyme
Synonyms:
Definition: A mesh-like cell arrangement, less compact than an epithelium.
Ontology: Anatomy Ontology [ZFA:0000393]