1. 'Systolic pressure' is the term that indicates the lower limit of blood pressure.   True   False   2. The auricles of the heart have thicker walls than the ventricles.   True   False   3. The coronary arteries originate from the base of the aorta.   True   False   4. Pericardium is the double-walled membranous covering that protects the heart.   True   False   5. Which is the largest artery in the human body?   renal artery   aorta   pulmonary artery   hepatic artery   Hint Half-n-half Clue   6. There are four kinds of valves in the heart.   True   False   7. Which of the following is not a function of the spleen?   Spleen produces red blood corpuscles.   Spleen produces blood platelets.   Spleen stores blood.   Spleen produces lymphocytes.   Half-n-half Clue