Question

Which is True blood flow into the coronary arteries at rest

A. It’s a greatest during the systolic phase of the the cardiac cycle
B. It is greatest during the diastolic phase of the cardiac cycle
C it is equivalent to approximately 20% of the cardiac output
D it is equivalent to approximately 40% of the cardiac output

Answer 1

A. It's greatest during the systolic phase of the cardiac cycle.

Step-by-step explanation:

C and D are both false. Rest flow is ~225ml/min which is 5% of cardiac output.

The systolic phase is where the heart pumps blood into the arteries so I'm assuming that's it.