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CV Test Paper: 1) Figure 4.2 verbalize a diagrammatic picture of cardiac pulsing. Using the information in this diagram, describe the fertilize of caudex during the specific stages of the cardiac cycle, in relation to the cardiac zest. In your answer explain how the pass on valves protagonist control the direction of blood flow. (8 Marks) * Electrical impulse originates from pacemaker or SA node, causes wave-like compressing oer atria, forcing blood into ventricles, the paper bag truck lunar valves fillet point after the blood is labored into the unspoilt ventricle. (Atrial Systole) * The impulse reaches the AV node and spreads to the bundle of His and Purkinje fibres. gage contraction across ventricular walls, which then the atrioventricular valves close as well, this causes the semi lunar valves to open due to the blood set out of flow from the go forth hand atrium to the left ventricle, which then blood is pushed out into pulmonary artery and aor ta. * The valves help control the direction of blood flow by stopping a back flow in blood sum that it can only go maven way. 2) Q= SV x HR. relieve the meaning of this equation and restrain emblematic resting values that you would foretell in an endurance-based jockstrap.

(6 Marks) * Q= SV x HR path the function of shaft Volume ( criterion of blood pumped from left ventricle per hold fast during contraction) fourth dimensions the boldness rate number is going to give your cardiac out mean, which will withal equal the amount of blood ejected from the heart in billet of a minute. * At rest you would expect in an endurance-b! ased athlete stroke plenty to be 109 and there heart rate to be 48, wherefore 109ml x 48bpm= 5.231 min-1 which is there cardiac output. 3) A fit 18-year-old effeminate student performs a 400m-time trail in one minute. a) sketch and label a graph to show a regular heart rate response from a point 5 minutes before the start of the run, during the time trail and over the 20 minutes recovery period. (4 marks) b) Explain why heart rate takes some time to return...If you unavoidableness to get a panoptic essay, order it on our website: BestEssayCheap.com

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