Term: somite 23 vertical myoseptum
Name: somite 23
Synonyms:
Definition: Undifferentiated mesodermal component of early tail segment 23 or metamere, derived from paraxial mesoderm; forms the myotome, sclerotome and perhaps dermatome.
Ontology: Anatomy Ontology [ZFA:0000730]

Name: vertical myoseptum
Synonyms: transverse myoseptum
Definition: Connective tissue partitions developing between the myotomes.
Ontology: Anatomy Ontology [ZFA:0000610]