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

Name: mitochondrion
Synonyms: mitochondria
Definition: A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
Ontology: GO: Cellular Component [GO:0005739]    QuickGO    AmiGO