Coronary heart disease is due to ______.
A. Streptococci bacteria
B. Inflammation of pericardium
C. Weakening of heart valves
D. Insufficient blood supply to heart muscles
Answer:D
Coronary heart disease is due to ______.
A. Streptococci bacteria B. Inflammation of pericardium C. Weakening of heart valves D. Insufficient blood supply to heart muscles