Circulatory System QuizVersion en ligne This quiz focuses on the Circulatory System. par Landy Laroda 1 How much times does the heart beat a day? a 100,000 b 3,000,000,000 c 2,000 d 7,000,000 2 What is the outer layer of the heart called? a Pericardium b Endocardium c Vena Cava d Aorta 3 What is the inner layer of the heart called? a Pericardium b Ventricles c Endocardium d Atria 4 Blood enters the heart through the.... a Aorta b Right Ventricle c Left Ventricle d Right Atrium 5 Name 2 things that can affect your heart rate. Select one or more answers a Emotion b Race c Location d Exercise 6 What are the 4 valves of the heart? Select one or more answers a Bicuspid Valve, Cuspid Valve, Aortic Valve, Pulmonary Valve b Cardiac Valve, Endocardium Valve, Pericardium Valve, Aortic Valve c Pulmonary Valve, Septic Valve, Mitral Valve, Tricuspid Valve d Tricuspid Valve, Bicuspid Valve, Aortic Valve, Pulmonary Valve