Homeostasis Lab
Intro
Homeostasis is your body’s ability to keep everything stable. When something get too far away from normal levels, a negative feedback happens, returning it to homeostasis. We choose to study how water. The independent variable was the water because we were changing it each time. The dependent variable was our blood pressure because it was being changed by how much water we were drinking, and it was what we were measuring. The control was the begining blood pressure. Our hypothesis is if we drink more water, then our blood pressure will go up.
Result
After drinking water the blood pressure of each person in our group went up. The data was a little inaccurate because we ate lunch after the 200 ml so we did two trials and had more accurate data. For our data, Dom’s resting bp was 98/55, after the first 200 ml of water it was 132/63, during rest 2 it was 101/58, and lastly at test 2 he was at 112/50. Gabe’s resting bp was 103/54, after the first 200 ml of water it was 115/89, during rest 2 it was 118/80, and lastly at test 2 he was at 113/96. Jenna’s resting bp was 86/68, after the first 200 ml of water it was 96/71, during rest 2 it was 91/45, and lastly at test 2 she was at 114/79. Last, Jason’s resting bp was 110/73, after the first 200 ml of water it was 118/70, during rest 2 it was 111/72, and lastly at test 2 he was at 101/60.
Abstract
We believe that when you drink water, your blood pressure goes up. For this lab, we were studying homeostasis, and we were checking water balance. We wanted to see if when you drink water whether your blood pressure goes up or down after drinking water. Each member of our group tested their blood pressure before drinking 200 mL of water. Then they tested their blood pressure after drinking 200 mL of water. Then we repeated both after lunch. We noticed that three out of four of our blood pressures went up after drinking water.
Discussion and Conclusion
When you drink water, your blood pressure goes up. Our data proves this. After drinking 200mL of water the blood pressure raises. It went well because we could quickly get data and results, and it was easy to reproduce. Some things that didn't go as well, we the fact that we had lunch in between that could have messed up our data. We could have done more tests with more water to get more data.
Method and Material
To do our procedure, you will need at least four people as your sample size. Then get access to a lot of water, and a way to measure out 200 ml of water for each person. Lastly, you will need a device to measure your blood pressure (A sphygmomanometer). Then follow the procedure to do our experiment on how water affects blood pressure in homeostasis
Content
Content:
- Homeostasis: the tendency toward a relatively stable equilibrium between interdependent elements.
- Heart Rate: The speed of the heartbeat measured by the number of contractions (beats) of the heart per minute (bpm). The heart rate can vary according to the body's physical needs, including the need to absorb oxygen and excrete carbon dioxide. We measure our heart rate by (counting our pulse for 6 seconds)(10)=our heart rate.
- Dependent variable: The dependent variables represent the output or outcome whose variation is being studied. Our dependent variable was our heart rate.
- Independent variable: In mathematical modeling, statistical modeling and experimental sciences, the values of dependent variables depend on the values of independent variables. Our independent variable was the distance ran (100m or 200m).
