Homeostasis Lab

During the Homeostasis Lab, my group, consisting of Kaitlyn O. and Tiffany E., observed the effects of exercise on homeostasis. According to Britannica, Homeostasis is the body’s ability to maintain equilibrium either through a certain temperature or oxygen level in the body. Given the lab, I learned that physical changes in the body worked to support and maintain homeostasis. For example, people sweat and breathe heavily during workouts.

Before the lab, I was designated as the subject to perform jumping jacks for three 2 minute intervals (a total of 6 minutes), while my group mates made qualitative and quantitative observations on the changes of my

  • skin color
  • perspiration level
  • body temperature
  • heart rate
  • breathing rate
  • oxygen saturation
  • blood pressure

After doing jumping jacks for two minutes while Kaitlyn O. timed me, my group quickly recorded the data. After each of the two remaining intervals, my group completed the same process of observation (The data can be found on the right).
ex temp
heart rateAfter 6 total minutes of exercise, I was given one minute of rest to allow my body to return to homeostasis. Then, one last time, qualitative and quantitative observations were taken on the state of my body.

Although my group hypothesized that each category would increase, our data did not support the categories regarding body temperature, heart rate and blood pressure as each decreased at 6 minutes of jumping jacks. This led to the conclusion that although the body may rise in temperature and lose oxygen, the body’s ability to maintain homeostasis is stronger and faster than the body’s ability to reach maximum temperatures and dangerous oxygen levels with a healthy and active body. Through this lab, I learned and now understand that perspiration works to cool off the body as it is created from heat in body. In addition, I learned that it is important to understand homeostasis because failure to maintain homeostasis can result in overheating, which if an athlete understands homeostasis, can be prevented. While I learned from past biology classes that the heart beats faster and breathing rates increase when the body needs more oxygen, this lab gave me a visual understanding of the concept and allowed me to further understand homeostasis in a different perspective.


One thought on “Homeostasis Lab

  1. Hi Mavis,
    I was also designated to perform the jumping jacks for my group. We also assumed that almost all of the categories tested would increase, but our data did not support our hypotheses. Breathing rate stayed the same and so did skin color. I I know that with my lab there may have been some human error with our data. Do you think that there was any human error in your data? I really like how you included what you learned from the lab. I learned from this lab as well the importance of sweating, which I did not know before.


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