A female asked:
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why does the heart have a separate circulatory system and what circulatory system is effected by a heart attack?

2 doctor answers
Dr. Heidi Fowler
24 years experience Psychiatry
Coronary arteries: The coronary arteries deliver oxygen-rich blood to the heart (myocardium).
Answered on Nov 23, 2017
Dr. Michael Gabor
32 years experience Diagnostic Radiology
The heart: doesn't have a circulatory system that is truly separate,but it is a muscle, and like any muscle or organ,has its own blood supply derived from the main circulatory system.The coronary arteries extend from the aorta and supply the heart. In a heart attack,one or more coronary arteries become narrowed or blocked, and without enough oxygenated blood(ischemia), the supplied tissue may die(infarct)
Answered on Nov 23, 2017

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Heart: The heart is an organ.

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