| 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 |