Which of the following statements are true of coronary circulation? (Read carefully and select all of the correct statements.)
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

A) The coronary arteries do indeed branch off of the ascending aorta.
B) The blood in the coronary arteries is indeed high in oxygen, as it is supplying oxygen to the heart muscle itself.
C) Blockage of a coronary vessel can result in ischemia (reduced blood flow) and necrosis (cell death) of the cardiac muscle that it supplies.
D) The coronary veins do indeed merge into the coronary sinus, but the coronary sinus empties into the right atrium (not the left atrium).

Which of the Following Statements Are True of Coronary Circulation