Allison
Forum Senior
Topics: 20
Posts: 117
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Coronary blood flow is studied in an animal model of ischemic heart disease. In this model, coronary blood flow is normal when the animal is at rest, but when the animal becomes active coronary vasoconstriction occurs and coronary blood flow decreases. The most likely cause of the observed vasoconstriction is the action of which of the following on vascular smooth muscle?
A) Adenosine
B) Nitric oxide
C) Norepinephrine
D) Oxygen
E) Prostacyclin
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| NE
Forum Guru
Topics: 53
Posts: 504
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C is the only vasoconstrictor.
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