Coronary circulation (arteries supplying oxygenated blood to the myocardium)

1.      The myocardium receives its blood supply directly from:

a)      The coronary sinus

b)     The coronary arteries

c)      The coronary veins

d)     The coronary sulcus

2.      A uniqueness about the coronary artery blood flow is that:

a)      Coronary artery blood flow occurs during ventricular diastole or ventricular filling

b)     Coronary artery blood flow occurs during ventricular systole or ventricular emptying

c)      Coronary arteries contain deoxygenated blood returning to the right atrium

d)     Coronary arteries are involved in hepatic portal circulation

3.       The two coronary arteries originate from

a)      The left side of the heart at the beginning (root) of the aorta

b)     The right side of the heart at the beginning of the pulmonary trunk

c)      The coronary sinus

d)     Left atrium

4.      What of the following conditions is a cause for myocardial infarction

a)      Tobacco smoking

b)     High cholesterol

c)      Coronary artery disease

d)     Diabetes

e)      High blood pressure

f)       Lack of physical activity

g)      Family history of MI

h)     Obesity

5.      Myocardial ischemia occurs when blood flow to the heart muscle (myocardium) is obstructed by a partial or complete blockage of a ____________________ by a buildup of plaques (atherosclerosis).

a)      Cardiac muscle

b)     Cardiac valve

c)      Coronary artery

d)     Carotid artery