Hypothesis: If an individual changes physical position, then their heart rate and pulse will be affected. Materials:
Part A Blood Pressure Measurement Procedures:
Blood pressures while sitting down: Systolic Pressure:
Diastolic Pressure:
Part B B.1 Reclining versus Standing Systolic Blood Pressure Procedures:
mmHg points rise of 8mm 6 rise of 2-7 mm 4 no change 2 2-5 mm drop 0 >=6 mm drop -2
Kathryn's Data: Laying down:
Fitness Points (Refer to Table 2): 6 Anna's Data: Laying down:
Fitness Points (Refer to Table 2): 4 B.2 Standing Pulse Rate Procedures:
Table 3 Heart Beats Per Minute Points 60-70 6 71-80 6 81-90 4 91-100 2 101-110 2 111-120 0 121-130 0 >=131 -2 6. Record your fitness score below and in Table 8. 7. Continue to Reclining Pulse Rate with the same person. Kathryn's Data: First Measurement: 66 beats per minute Second Measurement: 70 beats per minute Average: 68 beats per minute Fitness Score: 6 Anna's Data: First Measurement: 64 beats per minute Second Measurement: 62 beats per minute Average: 63 beats per minute Fitness Score: 6 B.3 Reclining Pulse Rate Procedures:
Table 4 Heart Beats Per Minute Points 50-60 6 61-70 6 71-80 4 81-90 2 91-100 0 >=101 -2 6. Record the fitness score below and in Table 8. 7. The students should remain laying down and continue to Reclining to Standing Pulse Rate. Kathryn's Data: First Measurement: 52 beats per minute Second Measurement: 56 beats per minute Average: 54 beats per minute Fitness Score: 6 Anna's Data: First Measurement: 54 beats per minute Second Measurement: 50 beats per minute Average: 52 beats per minute Fitness Score: 6 B.4 Reclining to Standing Pulse Rate: The Baroreceptor Relfex Procedures:
Table 5 Kathryn's Data: Measurement: 60 beats/minute upon standing Reclining Pulse Rate value: 54 beats/minute Difference: 6 Fitness Score: 6 Anna's Data: Measurement: 56 beats/minute upon standing Reclining Pulse Rate value: 52 beats/minute Difference: 4 Fitness Score: 6 B.5 The Step Test for Endurance Procedures:
Table 6 Seconds Points 0-30 8 31-60 6 61-90 4 91-120 2 121-150 2
Table 9 Total Score Fitness Relative Cardiovascular 34 - 36 Excellent 28 - 33 Good 16 - 27 Fair < 15 Poor
Table 7 Kathryn's Data: Number of beats in the 0-15 second period:
0-15 second interval minus bpm while standing: 44 Fitness Score: 0 Anna's Data: Number of beats in the 0-15 second period:
0-15 second interval minus bpm while standing: 25 Fitness Score: 4 Final results from lab (table 8) ANNA: Final results from lab (table 8) KATHRYN: Based on the total points in Table 8, Table 9 shows that Anna's relative cadiovascular fitness is Good (32 points) and Kathryn's is Good (30). Conclusion Part A + B: My hypothesis " If an individual changes physical position, then their heart rate and pulse will be affected. " was correct because as the physical positions of Kathryn and I changed, our heart rates and pulses changed. After we exercised, our pulse went up as did our heart rate. This shows that the contraction of muscles and flow of blood throughout the body increase as physical activity increases. A source of error was not standing still for long enough, because that could have effected the blood pressure measures. This lab was informational because it showed how physical activity, or lack of it, creates a change in someone's pulse or heart beat. Part C Heart Rate and Temperature Study in Daphnia Magna Procedures:
Table 10 Temperature (in Celcius) Heart Rate 23 102 5 72 10 72 15 84 20 90 25 114 Q10 of daphnia: k1 = 72 Q10 = k2 (10 / t2- t1) = 114 ( 10 / 25 - 5 ) = -7.28 k2 = 114 k1 72 t1= 5 C t2 = 25 C Q10 = -7.28 Analysis of Results Graph Justification
The graph shows the change of the heart beat of daphnia as its temperature is increased. As temperature increases, the beats per minute go up. This is because the rate of metabolism goes up. The independent variable is the temperature because as it changes, the beats per minute of the daphnias heart (the dependent variable) changes. The hypothesis being tested was "If an inidividual changes physical position, then their heart rate and pulse will be affected." this is correct however it was the temperature being changed, not the physical position of the daphnia. Study Questions
Conclusion Part C: My hypothesis " If an individual changes physical position, then their heart rate and pulse will be affected. " was not as relevant to Part C, as it was the temperature being changed not the physical position of the Daphnia. As the environment got hotter, the Daphnia's heart rate began to increase. So if the environment got colder, the Daphnia's heart rate would go down as it becomes harder to preform metabolic processes. A source of error during this lab was that the temperature of water for the daphnia was very hard to get cold so the temperature was a bit off. This lab was very informational because it showed how endothermic and ectothermic organisms behave differently due to the environment.
1 Comment
|
AuthorAnna Gueorguieva is a sophomore at El Capitan High School |