Biology_2007_Virtual_Lab_Answer_Key-1

For groups of ten women in each age range recording

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for groups of ten women in each age range, recording the average blood pressure readings each time. 4. Analyze the results of your experiment. Explain any patterns you observed. The experimental results reveal the following patterns: Average blood pressure for men increases as age increases (to age 45). The average blood pressure for men aged 45–54 is fairly equivalent to the average for men aged 35–44. The average blood pressure for women over 24 increases as age increases. The average blood pressure for women aged 18–24 is slightly lower than the average for women aged 11–17. The average blood pressure for women in every age group is lower than the average for men of the same age group. 5. Did the results of your experiment support your hypothesis? Why or why not? Based on your experiment, what conclusions can you draw about the relationship between age and gender to group blood pressure averages? For the most part, the results of the experiment supported both hypotheses. In support of the first hypothesis, the experimental results showed that average blood pressure increased as age increased for both genders in all age groups tested except one. The only exception was that average blood pressure for women aged 18–24 was actually slightly lower than for women in the younger age group (11–17). The experimental results also showed that the average blood pressure for women in every age group was lower than the average for men in the same age group, thus supporting the second hypothesis. 6. During the course of your experiment, did you obtain any blood pressure
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readings that were outside the normal range for the group being tested? What did you notice on the medical charts for these individuals that might explain their high readings? Yes, several blood pressure readings were obtained that were outside the normal range for the group being tested (especially for men in the older age groups). Factors on the medical charts for these individuals that might have contributed to the high readings include family history of hypertension, high-salt diet, consumption of alcohol, lack of exercise, and higher than optimal weight. 7. List the risk factors associated with hypertension. Based on your observations, which risk factor do you think is most closely associated with hypertension? Risk factors for hypertension include family history, high-salt diet, alcohol consumption, lack of exercise, and obesity. Of the fourteen individuals for whom blood pressure readings were obtained that were outside the normal range, eight were more than 30 percent above their optimal weight, six reported a high-salt diet, five had a family history of hypertension, four reported a lack of exercise, and four reported alcohol consumption. These findings suggest that of all the risk factors, obesity is the one that is most closely associated with hypertension.
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