4. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle
5. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
6. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
7. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery LUNGS OXYGENATE THE BLOOD
8. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery
9. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Pulmonary vein
10. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle
11. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
12. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
13. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Left ventricle Aorta Septum Mitral valve Bicuspid valve Aortic valve
14. Superior vena cava inferior vena cava Right atrium Tricuspid valve Right ventricle Pulmonary valve Pulmonary artery Left Atrium Mitral valve Left ventricle Aorta Septum Aortic valve
20. The Heartbeat: Blood Pressure Blood Pressure: Measure of force of blood in arterial wall Normal blood pressure Sphygmomanometer SYSTOLIC pressure DIASTOLIC pressure 120 80