Term: caudal vertebra hemal spine
Name: caudal vertebra
Synonyms: caudal vertebrae, mid caudal vertebra
Definition: Vertebra bearing a hemal arch and spine. The most posterior caudal vertebrae support the caudal fin and are referred to as preural vertebrae.
Ontology: Anatomy Ontology [ZFA:0000326]

Name: hemal spine
Synonyms: haemal spine
Definition: Hemal spines are extensions of hemal arches in the ventral skeletogenous septum of the caudal region.
Ontology: Anatomy Ontology [ZFA:0001364]