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\nHopefully your paragraph includes information that is similar to this: \n<\/div>\n\n

\nDuring the last 6 weeks my heart has gotten stronger, so it is able to pump out more blood per beat (stroke volume), this means I can now deliver blood to my working muscles much easier (with a lower HR) as my cardiac output has increased. This allows me to keep up with the demand my muscles have for oxygen and enables me to remove CO2 as it is produced. My pulmonary diffusion has also improved as I have more alveolar surface area and more pulmonary capillaries to exchange gases. I also have ore red blood cells to carry O2 to the muscles and my muscles have more myoglobin for taking in oxygen. All these changes mean my breathing rate is now lower during exercise, making it seem easier. \n<\/div>\n\n

\nApproximate answer length (50-75 words) \n<\/div>\n"},"keywords":[{"options":{"points":1,"occurrences":1,"caseSensitive":false,"forgiveMistakes":true,"feedbackIncludedWord":"none","feedbackMissedWord":"keyword","feedbackMissed":"You forgot to mention stroke volume. This increases as you get fitter allowing you to work at a lower HR during exercise."},"keyword":"stroke volume"},{"options":{"points":1,"occurrences":1,"caseSensitive":false,"forgiveMistakes":true,"feedbackIncludedWord":"keyword","feedbackMissedWord":"none","feedbackMissed":"You forgot to talk about pulmonary diffusion. More alveolar surface and more pulmonary capillaries means gas can be exchanged more efficiently in the lungs."},"keyword":"diffusion","alternatives":["gas exchange"]},{"options":{"points":1,"occurrences":1,"caseSensitive":false,"forgiveMistakes":true,"feedbackIncludedWord":"none","feedbackMissedWord":"keyword","feedbackMissed":"You should have mentioned an increase in pulmonary capillaries which (along with increased alveolar surface) allow for more efficient gas exchange in the lungs."},"keyword":"capillaries"},{"options":{"points":1,"occurrences":1,"caseSensitive":false,"forgiveMistakes":true,"feedbackIncludedWord":"none","feedbackMissedWord":"keyword","feedbackMissed":"You could have mentioned an increase in red blood cells that allows more O2 to be carried in blood."},"keyword":"red blood cells","alternatives":["hemoglobin, hemoglobin"]}],"overallFeedback":[{"from":0,"to":100}],"behaviour":{"inputFieldSize":"10","enableRetry":true,"ignoreScoring":true,"pointsHost":1,"linebreakReplacement":" ","minimumLength":350,"maximumLength":600,"overrideCaseSensitive":"on","overrideForgiveMistakes":"on"},"checkAnswer":"Check","submitAnswer":"Submit","tryAgain":"Retry","showSolution":"Show solution","feedbackHeader":"Feedback","solutionTitle":"Sample solution","remainingChars":"Remaining characters: @chars","notEnoughChars":"You must enter at least @chars characters!","messageSave":"saved","ariaYourResult":"You got @score out of @total points","ariaNavigatedToSolution":"Navigated to newly included sample solution after textarea.","ariaCheck":"Check the answers.","ariaShowSolution":"Show the solution. You will be provided with a sample solution.","ariaRetry":"Retry the task. You can improve your previous answer if the author allowed that.","taskDescription":"

Explain why your training does not feel as hard as it used to by discussing at least TWO CV and TWO respiratory system adaptations that would have occurred over the last 6 weeks. <\/p>\n\n

Approximate answer length - 100 words <\/p>\n"}

Node-14754__Activity16-ChroniceffectsofexerciseontheCV