Introduction
Every day people take the time to choose their clothes based on the weather outside or the projected forecast on the news. As people prepare for their day they consider whether it is cold, cool, warm, or hot. Once this decision is made people select clothing that will ensure that they remain comfortable throughout the day. When the weather is cold people often decide to dress in layers so that they remain warm and have the option to remove clothing to help maintain a comfortable temperature.
Scenario
In this particular scenario, it is a beautiful fall day. It was so beautiful and sunny that I did not feel the need to bring my jacket. All of a sudden the clouds came and the temperature dropped. (Alter environment) Our bodies work much like a thermostat. When the body gets cold you get chills or goose bumps. (Response to natural stimuli) This helps us regain a comfortable temperature. (Adapt to environment) Our bodies tend to react in certain ways to help regulate proper body temperature. (Maintain internal environment)

Our bodies have a natural sense of environment which helps us maintain every day. I believe homeostatic mechanism is a positive mechanism our bodies have. Without this feature our bodies would either become too cold or even over heat. This in turn could cause several illnesses.
The Body’s Response
Sometimes increased body temperature can activate mechanisms that promote heat loss, and lowered body temperature activate mechanisms that conserve or even produce heat. This cycle can be called the feedback loop. A feedback loop has three major components. The components are: sensors that register the change, a control center that receives the signals of the sensors, and an effector mechanism or response. Temperature regulation has a control center located in the hypothalamus. This signals the body to activate warming mechanisms. This is located in the brain above the pituitary gland. The hypothalamus monitors the temperature in the blood as in goes through the brain. There are many cycles the body goes through to maintain a good temperature. For example, your arms and legs may get colder to protect your internal organs. Muscles on the skin contract causing goose bumps. Goose bumps raise the skins hairs causing them to trap warm air. In some cases this many not be effective in humans. However, the thyroid glands secrete hormones that increase metabolism to generate heat. Also when it is cold some muscles cause you to shiver in order to create heat.
Conclusion
I’ve learned that the key is homeostasis means “staying the same”. This is valuable. Our body temperature is an important factor to our being. This is the key to remaining healthy. Our receptors monitor the environment. The control center formulates the response. Nerve impulses are output and then effectors then carry out the change. Our body has a natural sense to stay warm. In turn, our body also knows how to react to its environment. This is the cycle.

Reference:
Ireland, K. A. (2012). Visualizing human biology (4th ed.). Danvers, MA: Wiley.