| Name: | tooth 4V |
|---|---|
| Synonyms: | |
| Definition: | Ceratobranchial 5 tooth which is posterior to tooth 3V and anterior to tooth 5V in the ventral tooth row. |
| Ontology: | Anatomy Ontology [ZFA:0001143] |
| Name: | osteoblast |
|---|---|
| Synonyms: | osteoblasts |
| Definition: | A bone-forming cell which secretes an extracellular matrix. Hydroxyapatite crystals are then deposited into the matrix to form bone. |
| Ontology: | Anatomy Ontology [ZFA:0009031] |