Evaluating Homeostasis – Diagnostic Tests Example

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"Evaluating Homeostasis" is a perfect example of a paper on diagnostic tests. Submission Instructions: Please complete your answers to the lab questions on this form. Please complete your answers, and SAVE the file in a  location, which  you will be able to find again. Then, attach and submit the completed form to the Week 1 Laboratory  dropbox  in the Ashford University classroom.     Table 4: Respiratory and Heart Rates per Condition  Participant Condition  Respiratory Rate (Breaths/Minutes)  Heart Rate (Beats/Minute)  Rest  12  72  Post-Exercise  14  80    Hypothesis:     If an individual  is subjected  to  an exercise activity, then there is an increase in the rate of respiration and heart rate.     Post-Lab Questions:   Is your data  quantitative  or  qualitative?

How do you know?     The data from the experiment is quantitative. This is because the data  measurable  giving a quantity that is quantified.       What type of graph would you use to represent the data from Table 4?  A bar graph      Does the data support your hypothesis from Step 1?  Why or why not?   The data from the experiment support the hypothesis because it indicates an increase in the respiratory and heart rate conforming to the hypothesis.       What is the independent variable in this experiment? What is the dependent variable?   The independent variable is the exercise  duration. Dependent variables are the respiratory rate and heart rate. What other variables  could be tested  in this experimental setup?   Body temperature and blood pressure  Use the following template to complete a lab report as described in the introduction.     purpose/Explanation     Evaluating Homeostasis: The effect of exercise on respiratory and heart rate     Homeostasis is responsible for the proper balance of gas concentration levels in the blood.

The experiment conducted  was aimed  at finding the effect that an exercise activity has on the respiratory and heart rate. Only one participant  was used  by the experiment whose respiratory rate was taken at rest and after an exercise of 45-60 seconds. Results indicated that respiratory rate and heart rate increased upon undergoing an exercise activity.          Homeostatic mechanisms are critical to the human body in ensuring that the body maintains the correct blood chemistry and ensures that tissues in the body receive the right amount of oxygen as well as other gas concentration.   An exercise activity increases the requirement of energy in the body causing disruption  of homeostasis and the circulatory system responds to the change by increasing the heart rate to increase the supply of blood full of oxygen to the body muscles and expel deoxygenated to the lungs for oxygenation (Miller and Eason, 2007).

Similarly, the respiratory system responds to the changes by increasing the  air supply  to the lungs for more oxygen to be absorbed. The changes ensure a balance of the blood chemistry and the level of gases  in the blood as well as muscle tissues  (Steane, 2014).      Materials used include:   Stopwatch  Participant and examiner  Computer  Internet    Procedure  The participant was asked  to sit comfortably  and the number of breaths taken in 15 seconds, multiplied by 4 and then recorded in table 4  The participant heart rate  was taken  using the pulse by placing the forefinger on the radial artery.

The number of beats was counted, multiplied by  4,  and then recorded in table 4.  The participant  was then instructed to exercise aerobically for 45-60 seconds and steps  (i)  and (ii) repeated accordingly. Data was then recorded in table 4       Results from the experiment  were recorded  as shown in table 4.  Table 4: Respiratory and Heart Rates per Condition  Participant Condition  Respiratory Rate (Breaths/Minutes)  Heart Rate (Beats/Minute)  Rest  12  72  Post-Exercise  14  80    Aerobic exercise that the participant was subjected to lead to a disruption in the hemostasis, hence the participant’ s body required more energy prompting the circulatory and respiratory systems to increase blood delivery and oxygen supply respectively, which lead to increased heart  from 72-80  and respiratory rate  from 12-14.     Homeostasis is  responsible for maintaining the body changing environments.

Consequently, an exercise activity initiate homeostatic mechanisms such as increased heart rate and respiratory rate to maintain blood’ s chemistry and gases balance   


Miller, W. and Eason, J., 2007. Exercise physiology :Revised Edition. 1st ed. London: Lippincott Williams & Wilkins.

Steane, R., 2014. Effects of exercise on the body. [online] Biotopics.co.uk. Available at: [Accessed 14 Oct. 2014].

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