Term: rhombomere 1 ventral region
Name: rhombomere 1
Synonyms: r1
Definition: Anteriormost hindbrain segment or neuromere.
Ontology: Anatomy Ontology [ZFA:0001031]

Name: ventral region
Synonyms:
Definition: Anatomical region ventrally located on the body or body part.
Ontology: Spatial Ontology [BSPO:0000084]