1. The Structure of the Heart Learning Objectives: Label the parts of the heart. Label the parts of the heart. How is the structure of the heart related to its function? How is the structure of the heart related to its function? Why is the heart made up of 2 adjacent pumps? Why is the heart made up of 2 adjacent pumps?

2. bicuspid valve

3. Blood Vessels The aorta is connected to the left ventricle and carries oxygenated blood to all parts of the body except the lungs. The vena cava is connected to the right atrium and brings deoxygenated blood back from the tissues of the body. The pulmonary artery is connected to the right ventricle and carries deoxygenated blood to the lungs. The Pulmonary vein is connected to the left atrium and brings oxygenated blood back from the lungs.

4. Valves The bicuspid valve is found between the left ventricle and the left atrium and prevents backflow of blood from the left ventricle to the left atrium. The tricuspid valve is found between the right ventricle and the right atrium and prevents backflow of blood from the right ventricle to the right atrium. The semi-lunar valves are found in the aorta and pulmonary artery. They prevent backflow of blood into the ventricles.

5. The heart also needs its own blood vessels – coronary arteries and cardiac veins. They supply the heart muscle with oxygen so that the muscle cells can respire. And remove waste carbon dioxide. A blockage of these arteries leads to myocardial infarction (heart attack) because the heart muscle is deprived of oxygen and so dies.

8. Locate the following on your heart: Externally: Coronary arteries Coronary arteries Pericardium PericardiumInternally: Left ventricle Left ventricle Left atria Left atria Right atria Right atria Right ventricle Right ventricle Bicuspid and tricuspid valve Bicuspid and tricuspid valve Aorta Aorta Vena cava Vena cava Pulmonary artery Pulmonary artery Pulmonary vein Pulmonary vein Septum Septum Semi-lunar valves Semi-lunar valves

9. Questions List the correct sequence of the 4 main blood vessels and the 4 heart chambers that a red blood cell will pass through on its journey from the lungs through the heart and body and back again to the lungs. List the correct sequence of the 4 main blood vessels and the 4 heart chambers that a red blood cell will pass through on its journey from the lungs through the heart and body and back again to the lungs. Why does the left ventricle have a thicker wall than the right ventricle? Why does the left ventricle have a thicker wall than the right ventricle? Where would you find the following valves: Where would you find the following valves: Bicuspid? Bicuspid? Tricuspid? Tricuspid? Semi-lunar valves? Semi-lunar valves? What causes a heart attack? What causes a heart attack?

10. The Cardiac Cycle Learning Objectives: What are the stages of the cardiac cycle? What are the stages of the cardiac cycle? How do the valves control the flow of blood through the heart? How do the valves control the flow of blood through the heart? How do you calculate cardiac output? How do you calculate cardiac output?