Cardial
Cardiac auscultation is the medical term meaning listening to the heart.
cardiac surgery
A Cardiac Surgeon
In Situ
Origin.originOriginorigin
Psychogenic means of mental origin or causation
There is no single term but a good sentance would be "cardiac conductance disorder"
Cardiac catheterization si the medical term meaning passing a tube through a vessel into the heart.
Proximal means nearer the point of origin.
My favorite is "idiopathic", but "cryptogenic" is also correct.
The insertion is the end of the muscle. The origin is the beginning.
You have described a cardiac stress test.