Which of the following statements are true of coronary circulation (Select all that apply)?
A)The coronary arteries are branches of the ascending aorta.
B)The blood in the coronary arteries is high in oxygen.
C)Blockage of a coronary vessel may cause ischemia and necrosis of cardiac muscle.
D)The coronary veins merge into the coronary sinus,which empties blood into the left atrium.

Question

Quizplus · Accepted Answer

The coronary arteries branch from the ascending aorta and carry oxygen-rich blood to the heart muscle. Blockage in these arteries can lead to ischemia and necrosis of cardiac tissue. The coronary sinus, however, empties into the right atrium, not the left.

Which of the Following Statements Are True of Coronary Circulation