Answer:
"Nitroglycerin opens the arteries to allow more oxygen to be delivered to the heart muscle." Nitroglycerin causes "vasodilation" of the coronary arteries resulting in improved perfusion (blood flow) and delivery of oxygenated blood to the heart muscle.
Step-by-step explanation:
Nitroglycerin is a vasodilator that relaxes the smooth muscle of the arteries and veins, which increases blood flow to the heart muscle. Nitroglycerin does not increase blood pressure. Nitroglycerin does not reduce vasospasms of the heart's arteries. Nitroglycerin does not decrease the amount of oxygen required by the heart muscle.