Answer:
Reduced blood flow to the myocardium.
Explanation:
Cardiovascular disease may be defined as the disease that affects the functioning of the heart and blood vessels. Different cardiovascular diseases are heart attack, arteriosclerosis and heart failure.
The heart problems mainly occur due to the irregular blood flow in the myocardium. The reduced blood flow in the myocardium causes the emergency medical situation for the patient. The individual requires proper medical attention.
Thus, the answer is option (A).
I think the circulatory system is the best body system because we need the heart to stay alive, many people live with only one lung. but we need the respiratory system to let oxygen in, and let carbon dioxide out.
