By Nicky Fernandez and Diane Thajeb

 It is the maintenance of a constant environment in organisms, such as temperature and ect.

 We will record the body temperature of a test subject before exposing them to different conditions (i.e. running or exercising), and we will therefore conclude that the rise in temperatures make the internal temperatures change.

 Since the human body can regulate its internal temp. by itself, when specific conditions(like exercising or working) happen the body’s temperature may be higher than normal conditions because of homeostasis.

 Recording Materials  Thermometer  A test subject (person)

To see the change in the internal temperature in a person, we will need to create a set of different conditions: 1. We will need to record the body temperature of the test subject prior to any sort of change. (we will measure with the thermometer within the elbow joint of the person) 2. A condition of change that we will apply to the test subject will be that of an exercise, where they will run in a determined distance.

 3. After the exercise, we will once again measure the test subject’s temperature with the thermometer.  4. We will compare the results and conclude a difference in temperatures, and therefore answer our question over homeostasis.

Before exposure to different conditions (running): 93.2 degrees Fahrenheit. (we measured the thermometer in the conditions for a minute) After exposure to different conditions (running): 95 degrees Fahrenheit (we measured the thermometer conditions for a minute as well).

Our temperature recordings only changed by a few degrees, but that still proves that Homeostasis works under different conditions. The test subject’s body temperature changed once exposed to different conditions, thus explaining that when the body is under different conditions (i.e. works more or less), homeostasis comes in and aids it in the release of the energy(the energy to work has to come from somewhere after all) and making sure that the body is at a stable temperature according to the type of conditions outside of the body.

 To maintain homeostasis the unicellular organisms grow, respond to the environment, transform energy, and reproduce.  Without homeostasis, there wouldn’t be living things. Despite outside environments constantly changing, there must be a relatively stable internal environment. Homeostasis makes sure that despite changing outside environments changing, the body would be balanced.

 Even unicellular organisms must have a relatively stable internal environment and chemical conditions.  Every cell contributes to maintenance of the relatively stable internal environment.

 It involves with “dynamic mechanisms” that detect and respond when things are not at their set points values. In other words, when things are not normal, not at their set values, then they respond and fix it so that homeostasis would keep working. By triggering responses that restore the variables back to the normal working range.

 Concentration of nutrient molecules  Temperature  Blood volume and pressure  Ph  Concentration of O 2  Concentration of waste products  Concentration of salt, water, and other electoryates

 Outside interferences include:  Lack of oxygen, pathogens, toxins, heat, and coldness  Inside interferences are:  Instability of body temp. and/or blood pressure, concentration of water, glucose, salts, oxygen, ect. And physical or psychological distresses.  These disruptions can vary from mild to severe. If homeostasis is maintained, than you can die.