1. The auricles of the heart have thicker walls than the ventricles.   True   False   2. Blood pressure is exerted by the blood flowing through the veins on the walls of the veins.   True   False   3. The pulse rate decreases during strenuous physical work.   True   False   4. 'Systolic pressure' is the term that indicates the lower limit of blood pressure.   True   False   5. Which is the largest artery in the human body?   pulmonary artery   renal artery   aorta   hepatic artery   Hint Half-n-half Clue   6. The word 'pulse' is related to veins.   True   False   7. A portal vein begins in the form of capillaries and ends in the form of capillaries too.   True   False