Homeostasis And Background Information : Homeostasis

1048 Words Sep 22nd, 2014 5 Pages
Raymond Yee
Southerd
Physiology 6
22 September 2015
Lab 1: Homeostasis
Background Information:
Homeostasis is the ability or tendency to maintain internal stability in an organism to adjust to the environmental changes. An example of homeostasis is a thermostat that operates by switching heaters and air-conditioners on and off in response to the temperature inputs’ change. The two types of homeostasis that occurs are positive and negative feedback loops. In a positive feedback loop, an organism is producing a certain product at a faster rate to adapt. An example of a positive feedback loop is a woman after labor who lost a lot of water in the progress, will have an increase of water production to become stable again. Negative feedback loops are when an organism need to lose a certain product to keep balance. An example of a negative feedback loop is sweating. When the temperature becomes too hot for the body, it will release sweat to cool down and maintain equilibrium inside the body. An example of a factor in the human body that is kept relatively constant due to homeostasis is change in heart rate. Heart rate is the rate of how many beats, also known as pulses, the heart makes per a certain amount of time, usually in minutes. It can be simply measured by placing your hand on your heart and counting the beats. Another method is two fingers on wrist or neck. For humans, the average rate is 60 to 100 beats per minute. When the heart rate increased due to some sort of…

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