Multiple Choice
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.
Correct Answer:
Verified
Correct Answer:
Verified
Q169: During exercise, blood flow to the heart
Q170: The layer of the wall of an
Q171: In veins, backflow of blood is prevented
Q172: Which vein is NOT paired with the
Q173: The elasticity of the large arteries permits
Q175: Which of the following statements are true
Q176: The layer in the wall of an
Q177: A venous anastomosis provides an alternate pathway
Q178: To maintain blood pressure, the normal state
Q179: A venous anastomosis is important because it:<br>A)provides