Term Name:	atrial cardiac muscle cell fate commitment
Synonyms:	atrial cardiomyocyte cell fate commitment, atrial heart muscle cell fate commitment
Definition:	The commitment of cells to atrial cardiac muscle cell fates and their capacity to differentiate into cardiac muscle cells of the atrium. Cardiac muscle cells are striated muscle cells that are responsible for heart contraction.
Ontology:	GO: Biological Process [GO:0060924]    QuickGO    AmiGO