1. The cardiac veins carry blood to the walls of the heart.   True   False   2. Plasma is a constituent of blood.   True   False   3. During the ventricular systole, the blood enters the ventricles.   True   False   4. With reference to the heartbeat, the word 'systole' refers to a relaxation phase whereas the word 'diastole' refers to a contraction phase.   True   False   5. The _______ of the heart pumps the blood up to the lungs only.   left ventricle   right auricle   right ventricle   left auricle   Hint Half-n-half Clue   6. The right auricle of the heart receives oxygenated blood.   True   False   7. In a normal adult, the red blood corpuscles are produced in the liver.   True   False