Anterior trunk muscle shows mix of axial and appendicular developmental patterns

Skeletal muscle in the trunk derives from the somites, paired segments of paraxial mesoderm. Whereas axial musculature develops within the somite, appendicular muscle develops following migration of muscle precursors into lateral plate mesoderm. The development of muscles bridging axial and appendicular systems appears mixed.We examine development of three migratory muscle precursor-derived muscles in zebrafish: the sternohyoideus (SH), pectoral...