Which among the following does not characterise the circulation of blood by human heart?

The heart regulates the amount of vasodilation or vasoconstriction of the coronary arteries.

During the ventricular systole, the subendocardial coronary vessels are compressed due to the high intra-artirial pressures.

If the posterior descending artery is supplied by the circumflex artery (CX), then the coronary circulation is termed as left-dominant.

The papillary muscles are attached with the mitral valve.

The majority of vasculature in the body constricts to norepinephrine.