Q.

Regarding a coronary blood flow:

A. systolic blood flow in subendocardial arteries is greater than in the epicardial
B. less than 50% of oxygen is removed during passage when in the resting state
C. the coronary circulation is well supplied by parasympathetic vasodilatory fibres
D. sympathetic vasoconstrictory fibres predominate in epicardial vessels
E. none of the above
Answer» D. sympathetic vasoconstrictory fibres predominate in epicardial vessels
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