Term: horizontal myoseptum muscle pioneer
Note: This page represents a term created by the combination ("post-composition") of two ontology terms. For more information on the individual terms, click the hyperlinked name.
Name: horizontal myoseptum
Synonyms: horizontal septum
Definition: A connective tissue partition developing at the apex of the chevron-shaped myotome and separating dorsal (epaxial) and ventral (hypaxial) body wall muscle masses.
Ontology: Anatomy Ontology [ZFA:0000671]
Name: muscle pioneer
Synonyms: muscle pioneers, non migratory adaxial cells
Definition: Cells that develop from adaxial cells that express engrailed and do not migrate completely to the lateral surface of the myotome, and instead extend from the notochord to the lateral surface of the somite, at the level of the future horizontal myoseptum.
Ontology: Anatomy Ontology [ZFA:0001086]