Homeostasis Lab Report
Based on the prompt above, “You are going to test your body’s ability to maintain homeostasis. You will test this by monitoring a person in your group’s breathing rate, heart rate, and qualitative observations” we devised a hypothesis which states that if a person exercises, his/her heart rate, breathing rate and sweat (qualitative observation) will increase in order for our bodies to maintain homeostasis and control our bodily functions. Based on our experiment we found that in Trial 1 the heart rate before the exercise was at 97 BPM, but then increased to 115 BPM immediately after the exercise and slowly dropped to 87 BPM after 5 minutes of rest and then to 80 BPM after 10 minutes of rest. In Trial 1 the breathing rate started at 26 breaths
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per minute, then increased to 36 breaths per minutes after the exercise and slowly started to decrease 30 breaths per minute after 5-10 minutes of rest. Our qualitative data, sweat, also showed signs of trying to retain homeostasis as well. In our observation is showed that there was no sweat before the exercise, but afterwards there was an increase in sweat around the forehead and armpit regions and after 5 to 10 minutes it started to decrease until none were left. When exercising our three dependent variables: heart rate, breathing rate and qualitative data (sweat) affect how our body maintains homeostasis and affects our circulatory and respiratory system. Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment (“Homeostasis” 2017). Based on our observation on our qualitative data (sweat), when exercising our body produces sweat to help control our body temperature as we start to become warmer. The moisture produced helps cool us off because in order for our body to maintain its bodily functions it is required to maintain a steady and stable body temperature (“Why do I sweat so much?” 2017). The cells in our body has different functions that help maintain homeostasis. In this case of our experiment, the cells perform functions that use up energy in order for our body to cause chemical reactions that help balance our bodily functions while exercising. During the process of using up the energy, heat is produced which causes our body to heat up (“Why do I get hot when I exercise?” 2013). The sweat produced from our observation above is an example of a chemical reaction that occurred in order to prevent our body from overheating. From our experiment there were two other factors as well that helped maintained our body temperature and homeostasis. The first factor was our measurement of the heart rate. The circulatory system exists to distribute different components throughout the body, it helps defend the body from diseases and transport heat as well as to maintain the body’s temperature (“What is the Purpose of the Circulatory System?” 2010). In our experiment we measured the heart rate as beats per minute. We found that the heart rate after the exercise increased drastically from when the time before the exercise. The cells in our body uses the oxygen that is transported by the blood to produce energy and heat. The heart pumps the blood through the arteries, veins and blood vessels throughout the body to supply the muscles and cells with oxygen. The heart also pumps the blood through the lungs which is where the blood cells re-supply for oxygen in order to provide a balanced amount of oxygen throughout the body. The blood also carries nutrients and hormones to the specific regions that are in need to help provide a balance of substance in those regions (“What is the Purpose of the Circulatory System?” 2010). It also helps transport heat throughout the body. For example, when the liver produces heat it circulates the heat from the liver to the heart brain and lungs to help keep it functioning (“What is the Purpose of the Circulatory System? 2010). In the case of the experiment above, the circulatory system was trying to release heat to maintain a balance of body temperature to each individual organ. The lung which helps transport oxygen into the blood cells also play another major role in a different organ system, the respiratory system. The respiratory system has the function of taking in oxygen to the bloodstream and breathing out carbon dioxide (“Respiratory System” 2016). To perform cellular respiration requires requires glucose and oxygen. The oxygen is then used to produce carbon dioxide, water and ATP through cellular respiration. The water is then moved through blood vessels and into the urinary system to get rid of in order to maintain a water balance in the body. The carbon dioxide is then breathed out again through the lungs of the respiratory system. The ATP produced from the cellular respiration is then used to produce energy for the body when it performs a physical activity. The respiratory helps provide a balanced amount of oxygen and carbon dioxide in our bodies. Oxygen is essential to perform cellular respiration while carbon dioxide is one of its product; therefore, the respiratory system is a cycle of taking in oxygen and releasing carbon dioxide. In our experiment we counted the number of breaths that we took in a minute. We took more breaths after the exercise than we did before. This can be explained as we require more energy (ATP) as we exercise because it uses up the energy in our muscles after a certain duration of time. The respiratory system helps maintain homeostasis through its circulation of oxygen (IN) and carbon dioxide (OUT). Some errors that occurred during the experiment were our ability to measure the exact heart rate (BPM), our observation of the qualitative data (sweat) and the amount of energy we used to perform each trial of the exercise and the conditions of the experiment.
When we performed the experiment, we had difficulties measuring the exact heart rate as we would sometimes lose the heartbeat and would have to recount it. It was also difficult to observe the amount of sweat because he was wearing clothes over his body which made observing the data inaccurate due to the clothes preventing us from seeing if there were any other regions with sweat. During the 2 trials, the person also ran at different paces which could affect the results because running at a faster pace can increase your heartbeat and breathing rate as well as sweat. This causes an undeniable inconsistency in our experiment. The condition of the place is also another factor as the temperature was humid and hot which can also tamper with the results and cause more sweat to be produced. If we had an instrument that could measure the exact heart rate as well as have a more stable and consistent environment then our results may differ. With these improvements and corrections we would be able to find more reliable and consistent results in further
experiments. From the Oxygen/Homeostasis Lab, we came up with five further experiments. The first experiment would be to try and use a different qualitative data that is instead of measuring or counting the amount of sweat we would try and measure the body temperature to see if it increases or decrease. This would allow us to understand how heat circulates throughout the body. The second experiment would be to perform a different exercises that uses other parts of the bodies to determine if using certain muscles increase the heart rate or breathing rate more than others. The third experiment would be to perform the experiment in a different environment as the conditions of the environment such as humidity and heat could tamper with some results. By changing the environment to a less humid and cool environment could change the results of our qualitative data of sweat and could alter the body temperature. The fourth experiment would be to exercise for a longer set of time to measure if exercising for a longer duration will increase the heart rate, breathing rate or amount of sweat. The fifth experiment would be to perform the experiment with another person as some people may be more physically fit than others which can affect the 3 dependent variables as well. By conducting these further experiments, it will help improve our understanding of how homeostasis occurs throughout the different parts of our bodies.
per minute, then increased to 36 breaths per minutes after the exercise and slowly started to decrease 30 breaths per minute after 5-10 minutes of rest. Our qualitative data, sweat, also showed signs of trying to retain homeostasis as well. In our observation is showed that there was no sweat before the exercise, but afterwards there was an increase in sweat around the forehead and armpit regions and after 5 to 10 minutes it started to decrease until none were left. When exercising our three dependent variables: heart rate, breathing rate and qualitative data (sweat) affect how our body maintains homeostasis and affects our circulatory and respiratory system. Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment (“Homeostasis” 2017). Based on our observation on our qualitative data (sweat), when exercising our body produces sweat to help control our body temperature as we start to become warmer. The moisture produced helps cool us off because in order for our body to maintain its bodily functions it is required to maintain a steady and stable body temperature (“Why do I sweat so much?” 2017). The cells in our body has different functions that help maintain homeostasis. In this case of our experiment, the cells perform functions that use up energy in order for our body to cause chemical reactions that help balance our bodily functions while exercising. During the process of using up the energy, heat is produced which causes our body to heat up (“Why do I get hot when I exercise?” 2013). The sweat produced from our observation above is an example of a chemical reaction that occurred in order to prevent our body from overheating. From our experiment there were two other factors as well that helped maintained our body temperature and homeostasis. The first factor was our measurement of the heart rate. The circulatory system exists to distribute different components throughout the body, it helps defend the body from diseases and transport heat as well as to maintain the body’s temperature (“What is the Purpose of the Circulatory System?” 2010). In our experiment we measured the heart rate as beats per minute. We found that the heart rate after the exercise increased drastically from when the time before the exercise. The cells in our body uses the oxygen that is transported by the blood to produce energy and heat. The heart pumps the blood through the arteries, veins and blood vessels throughout the body to supply the muscles and cells with oxygen. The heart also pumps the blood through the lungs which is where the blood cells re-supply for oxygen in order to provide a balanced amount of oxygen throughout the body. The blood also carries nutrients and hormones to the specific regions that are in need to help provide a balance of substance in those regions (“What is the Purpose of the Circulatory System?” 2010). It also helps transport heat throughout the body. For example, when the liver produces heat it circulates the heat from the liver to the heart brain and lungs to help keep it functioning (“What is the Purpose of the Circulatory System? 2010). In the case of the experiment above, the circulatory system was trying to release heat to maintain a balance of body temperature to each individual organ. The lung which helps transport oxygen into the blood cells also play another major role in a different organ system, the respiratory system. The respiratory system has the function of taking in oxygen to the bloodstream and breathing out carbon dioxide (“Respiratory System” 2016). To perform cellular respiration requires requires glucose and oxygen. The oxygen is then used to produce carbon dioxide, water and ATP through cellular respiration. The water is then moved through blood vessels and into the urinary system to get rid of in order to maintain a water balance in the body. The carbon dioxide is then breathed out again through the lungs of the respiratory system. The ATP produced from the cellular respiration is then used to produce energy for the body when it performs a physical activity. The respiratory helps provide a balanced amount of oxygen and carbon dioxide in our bodies. Oxygen is essential to perform cellular respiration while carbon dioxide is one of its product; therefore, the respiratory system is a cycle of taking in oxygen and releasing carbon dioxide. In our experiment we counted the number of breaths that we took in a minute. We took more breaths after the exercise than we did before. This can be explained as we require more energy (ATP) as we exercise because it uses up the energy in our muscles after a certain duration of time. The respiratory system helps maintain homeostasis through its circulation of oxygen (IN) and carbon dioxide (OUT). Some errors that occurred during the experiment were our ability to measure the exact heart rate (BPM), our observation of the qualitative data (sweat) and the amount of energy we used to perform each trial of the exercise and the conditions of the experiment.
When we performed the experiment, we had difficulties measuring the exact heart rate as we would sometimes lose the heartbeat and would have to recount it. It was also difficult to observe the amount of sweat because he was wearing clothes over his body which made observing the data inaccurate due to the clothes preventing us from seeing if there were any other regions with sweat. During the 2 trials, the person also ran at different paces which could affect the results because running at a faster pace can increase your heartbeat and breathing rate as well as sweat. This causes an undeniable inconsistency in our experiment. The condition of the place is also another factor as the temperature was humid and hot which can also tamper with the results and cause more sweat to be produced. If we had an instrument that could measure the exact heart rate as well as have a more stable and consistent environment then our results may differ. With these improvements and corrections we would be able to find more reliable and consistent results in further
experiments. From the Oxygen/Homeostasis Lab, we came up with five further experiments. The first experiment would be to try and use a different qualitative data that is instead of measuring or counting the amount of sweat we would try and measure the body temperature to see if it increases or decrease. This would allow us to understand how heat circulates throughout the body. The second experiment would be to perform a different exercises that uses other parts of the bodies to determine if using certain muscles increase the heart rate or breathing rate more than others. The third experiment would be to perform the experiment in a different environment as the conditions of the environment such as humidity and heat could tamper with some results. By changing the environment to a less humid and cool environment could change the results of our qualitative data of sweat and could alter the body temperature. The fourth experiment would be to exercise for a longer set of time to measure if exercising for a longer duration will increase the heart rate, breathing rate or amount of sweat. The fifth experiment would be to perform the experiment with another person as some people may be more physically fit than others which can affect the 3 dependent variables as well. By conducting these further experiments, it will help improve our understanding of how homeostasis occurs throughout the different parts of our bodies.