circuit 9 Transporting blood to or from heart From To 10 Presence of elastic

Circuit 9 transporting blood to or from heart from to

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circuit 9. Transporting blood to or from heart From To 10. Presence of elastic tissue Absent 2.3.2 Make a labelled diagram to show Monica what happens when cholesterol forms plaques on the walls of the blood vessels. (4) 2.3.3 Explain to Monica what the effect of high blood pressure is on the walls of the blood vessels. (3) 2.3.4 Explain to her how blood cholesterol and cardiovascular disease are related.(3) 2.3.5 Explain to her how smoking and cardiovascular disease are related. (3) 2.3.6 The cardiologist is of opinion that Monica should relax and stop worrying. She should however take less salt in her food because her blood pressure is too high. 2.3.6.1 Do you agree with the cardiologist? Explain. (3) 2.3.6.2 What advice would you give Monica? (3) 2.3.6.3 What is meant with the phrase: “ lowering your risk factors for heart disease and how can this be done? (3) 2.4. To enable you to show Monica exactly how the heart’s anatomy and physiology are related, we will use a few diagrams 2.4.1 Label figure 6.5 of the heart and large blood vessels. (8)
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Study unit 6 88 FIGURE 6.5: EXTERNAL STRUCTURE OF HEART 2.4.2 Discuss the position and the physical protection of the heart? (10) 2.4.3 Interpret figure 6.6 by labelling the aorta (2 places), vertebral column , pulmonary artery, lungs , oesophagus, pericardium , trachea , ribs , sternum and mediastinum (potential cavity between lungs in which heart is situated) and providing it with a heading. (13) FIGURE 6.6: A SECTION THROUGH HUMAN BODY SHOWING A TOP VIEW OF HEART 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12
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Study unit 6 89 2.4.4 Label the diagram (Figure 6.7) of the interior of the heart using information from Mader and Windelspecht (2010:598-599). (14) FIGURE 6.7: THE HUMAN HEART 2.4.5 Label figure 6.8. Indicate the myometrium, fibrous pericardium, pericardial cavity, endocardium, and trabeculae. (5) FIGURE 6.8: HEART WALLS 2.4.6. Label figure 6.9. Indicate the atrio-ventricular valves (bicuspid and tricuspid), the semi lunar valves (pulmonary and aortic) and provide a heading for the diagram. (5) 1 2 3 4 5 6 7 8 9 10 11 12 13 1 2 3 4 5
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