Term: heart rudiment myocardium
Name: heart rudiment
Synonyms: heart cone, rudimentary heart
Definition: The migrating myocardial precursors of the heart rudiment form a cone like structure between 19.5 hpf and 22 hpf, and eventually telescope out into the primitive heart tube at 24hpf.
Ontology: Anatomy Ontology [ZFA:0000115]

Name: myocardium
Synonyms: cardiac muscle, heart muscle
Definition:
Ontology: Anatomy Ontology [ZFA:0001319]