myocardium in dogs
The middle layer of the heart, comprised mainly of striated cardiac muscle fibers. Every claim on this page comes from the Leumas anatomy graph and carries its source.
What the myocardium is
The middle layer of the heart, comprised mainly of striated cardiac muscle fibers. The atlas records it as a tissue at the tissue scale in the dog.
Where the myocardium is
It sits in the thorax and trunk, within the muscular and cardiovascular systems. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.
What the myocardium connects to
The atlas records 22 typed relationships for it, across 11 kinds of connection. part of heart, musculature of body and organ.
Supply and innervation
Arterial supply: coronary artery, left coronary artery and right coronary artery. Venous drainage: cardiac vein.
Also called
Also recorded as heart myocardium, muscle of heart, cardiac muscle and heart muscle. Searching any of those names reaches this page.
Source
Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002349, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.
- Part of: heart, musculature of body and organ.
- A kind of: anatomical structure and heart layer.
- Attaches to: epicardium and visceral serous pericardium.
- Adjacent to: cardiac jelly and subendocardium layer.
- contains: conducting system of heart, cardiac muscle tissue of myocardium and myocardial layer.
- Supplied by: coronary artery, left coronary artery and right coronary artery.
- subtype: myocardium of atrium, myocardium of ventricle and outflow tract myocardium.
- composed of: cardiac muscle tissue.
Questions
Where is the myocardium?
It sits in the thorax and trunk, within the muscular and cardiovascular systems. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.
What does the myocardium connect to?
Part of: heart, musculature of body and organ.
Is the myocardium the same in other species?
This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.