Term: cardiac conduction system cardiac muscle myoblast
Name: cardiac conduction system
Synonyms: cardiac pacemaker, central conduction system
Definition: Anatomical system located in the heart that initiates and propagates heart contraction. The cardiac pacemaker.
Ontology: Anatomy Ontology [ZFA:0005063]

Name: cardiac muscle myoblast
Synonyms: cardioblast
Definition: A precursor cell destined to differentiate into cardiac myocytes.
Ontology: Anatomy Ontology [ZFA:0009234]