Term: cardiac conduction system heart contraction
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: heart contraction
Synonyms: cardiac contraction, heart beating, hemolymph circulation
Definition: The multicellular organismal process in which the heart decreases in volume in a characteristic way to propel blood through the body.
Ontology: GO: Biological Process [GO:0060047]    QuickGO    AmiGO