1. The auricles of the heart have thicker walls than the ventricles.   True   False   2. The aorta originates from the _______ of the heart.   right auricle   left ventricle   right ventricle   left auricle   Hint Half-n-half Clue   3. The spleen is located behind the stomach.   True   False   4. Blood aids in regulating the body temperature.   True   False   5. Which of the following is not a function of the spleen?   Spleen produces red blood corpuscles.   Spleen produces lymphocytes.   Spleen produces blood platelets.   Spleen stores blood.   Half-n-half Clue   6. 'Systolic pressure' is the term that indicates the lower limit of blood pressure.   True   False   7. Pericardium is the double-walled membranous covering that protects the heart.   True   False