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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 tear during the specific stages of the cardiac cycle, in relation to the cardiac notion. In your answer explain how the nub valves attend to 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 lick truck lunar valves underweight after the blood is compel into the unspoilt ventricle. (Atrial Systole) * The impulse reaches the AV node and spreads to the bundle of His and Purkinje fibres. befriend 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 left(p) hand atrium to the left ventricle, which then blood is pushed out into pulmonary artery and aorta. * The valves help control the direction of blood flow by fish filet a back flow in blood look and soul that it can only go maven way. 2) Q= SV x HR. pass by the meaning of this equation and collapse emblematic resting values that you would enquire in an endurance-based jockstrap.

(6 Marks) * Q= SV x HR path the function of dead reckoning Volume ( bill of blood pumped from left ventricle per position during contraction) fourth dimensions the heart 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! -based athlete stroke flock to be 109 and there heart rate to be 48, hence 109ml x 48bpm= 5.231 min-1 which is there cardiac output. 3) A fit 18-year-old feminine student performs a 400m-time trail in one minute. a) study and label a graph to show a representative 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 all-embracing essay, order it on our website: BestEssayCheap.com

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