Respiratory Bio Lab Report

Bio Lab: The Effect of Exercise on The Respiratory and Circulatory Systems
Ellie Cookson

Communication:

2. As the graphs show, both breathing rates and pulse rates spike significantly between the resting rates and immediately after exercise. Average breathing rates went from 26.7 breaths/min at sitting rate to 46.4 breaths/min during or immediately after exercise. Pulse rates also increased quite dramatically, going from an average of 65 beats/min at rest rate to an average of 100.3 beats/min after exercise. As the participant exercised for a longer period of time, a change in skin colouration was noticed. Faces flushed to a pink colour at first and then progressed into a darker red as exercise continued. It was also noted that
Homeostasis is the balance of all vital life systems within the body. Your body reacts to the environment it is in so that it can adapt to maintain a constant internal balance aka maintain homeostasis. During exercise, many processes are adapted to make sure your internal balance is constant. Muscles need more oxygen to create the ATP required to sustain muscle movement and so the breathing rate increases to increase oxygen. The extra oxygen will return equilibrium to the body because the amount of oxygen now matches the amount that the cells need. Lack of oxygen will throw homeostasis off balance and can result in severe cell damage. Since more oxygen is needed, the heart must also adapt to these demands and will pump the extra-oxygenated blood faster around the body. This results in heart rate going up to maintain the balance of oxygen getting to the cells and CO2 being removed. It also pumps faster to make sure that the balance between oxygen and waste CO2 stays constant. More oxygen is needed but also more waste CO2 is being created so the heart must beat faster to get the blood around the body to expel the waste. If it doesn’t speed up then there could be a buildup of CO2 or lack of oxygen, which would throw off the homeostasis. Homeostasis also makes sure that the body has a constant internal temperature, usually 37 degrees. Sweating and skin coloration both relate to homeostasis because they are both mechanisms to cool the body down. When exercising, body temperature tends to increase because of the amount of work being done by the internal systems. This is why sweating and skin coloration is needed. Skin coloration makes sure that heat from the body is being radiated off the body by making the blood flow closer to the skin and sweating uses excess heat to evaporate the sweat off the body, resulting in a cooling effect. Both of these mechanisms are used during exercise to make sure that the body does not overheat and maintains the constant internal