1. The spleen is a lymphatic organ.   True   False   2. The aorta originates from the _______ of the heart.   right auricle   right ventricle   left auricle   left ventricle   Hint Half-n-half Clue   3. Blood aids in regulating the body temperature.   True   False   4. 'Systolic pressure' is the term that indicates the lower limit of blood pressure.   True   False   5. Blood pressure is exerted by the blood flowing through the veins on the walls of the veins.   True   False   6. Pericardium is the double-walled membranous covering that protects the heart.   True   False   7. The word 'pulse' is related to veins.   True   False