1. Which of the following is not a function of the spleen?   Spleen produces blood platelets.   Spleen produces lymphocytes.   Spleen produces red blood corpuscles.   Spleen stores blood.   Hint Half-n-half Clue   2. The word 'pulse' is related to veins.   True   False   3. The aorta originates from the _______ of the heart.   right auricle   left auricle   left ventricle   right ventricle   Half-n-half Clue   4. Pericardium is the double-walled membranous covering that protects the heart.   True   False   5. There are four kinds of valves in the heart.   True   False   6. The coronary arteries originate from the base of the aorta.   True   False   7. The pulse rate decreases during strenuous physical work.   True   False