Coronary heart disease is caused by

  1. weak valves
  2. blockage of the coronary arteries
  3. a hole in the septum
  4. low blood sugar
Answer

B) blockage of the coronary arteries

Fatty deposits block coronary arteries. O Level Biology · Topic 11 Transport in Humans · 11.2 Heart

Biology MCQ · More O Level Biology: Transport in Humans MCQs · Practise