Term: pharyngeal pouch ventral-most region
Name: pharyngeal pouch
Synonyms: pharyngeal pouches
Definition: Outpocketings of pharyngeal endoderm that interdigitate with the neural crest derived pharyngeal arches. The pouches later fuse with the surface ectoderm to form the gill slits.
Ontology: Anatomy Ontology [ZFA:0001106]

Name: ventral-most region
Synonyms: ventral-most, ventralmost
Definition:
Ontology: Spatial Ontology [BSPO:0000039]