1. The cardiac veins carry blood to the walls of the heart.   True   False   2. The right auricle of the heart receives oxygenated blood.   True   False   3. In a normal adult, the red blood corpuscles are produced in the liver.   True   False   4. The left auricle of the heart receives _______ blood from the lungs.   oxygenated   deoxygenated   5. The inferior vena cava carries blood from the upper parts of the body to the heart.   True   False   6. Plasma is a constituent of blood.   True   False   7. During the atrial systole, the openings of the pulmonary vein and the vena cava are _______.   closed   open