★ Pediatric Cardiology Quiz
The umbilical cord has
A. one artery
B. two arteries
C. three arteries
D. four arteries
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In children, dobutamine mainly affects
A. Beta 2 adrenergic receptors
B. Beta 1 adrenergic receptors
C. Alpha 1 adrenergic receptors
D. Alpha 2 receptors
E. Beta 3 adrenergic receptors
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