1. 'Systolic pressure' is the term that indicates the lower limit of blood pressure.   True   False   2. Which is the largest artery in the human body?   aorta   hepatic artery   pulmonary artery   renal artery   Hint Half-n-half Clue   3. The spleen is a lymphatic organ.   True   False   4. A portal vein begins in the form of capillaries and ends in the form of capillaries too.   True   False   5. The coronary arteries originate from the base of the aorta.   True   False   6. The pulse rate decreases during strenuous physical work.   True   False   7. The auricles of the heart have thicker walls than the ventricles.   True   False