Heart

What the syllabus asks of you

• Identify in diagrams and images the structures 7 Identify in diagrams and images the of the mammalian heart, limited to: muscular atrioventricular and semilunar valves in the wall, septum, left and right ventricles, left mammalian heart and right atria, one-way valves and coronary 8 Explain the relative thickness of: arteries (a) the muscle walls of the left and right ventricles (b) the muscle walls of the atria compared to those of the ventricles 9 Explain the importance of the septum in separating oxygenated and deoxygenated blood 10 Describe the functioning of the heart in terms of the contraction of muscles of the atria and ventricles and the action of the valves
• State that blood is pumped away from the heart in arteries and returns to the heart in veins
• State that the activity of the heart may be monitored by: ECG, pulse rate and listening to sounds of valves closing
• Investigate and describe the effect of physical 11 Explain the effect of physical activity on the activity on the heart rate heart rate
• Describe coronary heart disease in terms of the blockage of coronary arteries and state the possible risk factors including: diet, lack of exercise, stress, smoking, genetic predisposition, age and sex
• Discuss the roles of diet and exercise in reducing the risk of coronary heart disease