1. State the definition of Homeostasis.


Homeostasis is the ability to maintain internal stability in an organism in response to the environmental changes. The internal temperature of the human body is the best example of Homeostasis.


2. Which body systems help to maintain Homeostasis?


The endocrine system and the nervous system are essential in maintaining the Homeostasis of the body. However, other organs also play a role in maintaining Homeostasis as well.


3. How is Homeostasis essential for our body?


Homeostasis is a self-regulating process that controls internal variables necessary to sustain life.


4. What are the main components of Homeostasis?


Homeostasis involves three components- the receptor, the control centre, and the effector. The receptor receives information on the changing environment, and the control centre processes the information received by the receptor. And the effector responds to the commands of the control centre by enhancing or opposing the stimulus.


5. What is the primary function of Homeostasis?


The primary function of Homeostasis is to maintain a balance within the body regarding its temperature, salt concentration, food intake and pH levels.


6. How does the cell maintain Homeostasis in the body?


To maintain Homeostasis in the body, the cells perform the following activities: Obtain and use energy, exchange materials, make new cells, and eliminate wastes.


7. What role does the liver play in Homeostasis?


Our liver plays a vital role in blood glucose Homeostasis. When the blood glucose level rises after a meal, the liver removes glucose from the blood and stores it in the form of glycogen. When the blood glucose levels are low, it converts the stored glycogen back to glucose.


8. How does the skin help in maintaining Homeostasis?


If the external temperature is high, the body tries to keep cool by producing sweat. Also, blood vessels near the skin surface dilate. This helps in decreasing body temperature. Conversely, if the external temperature is cold, the blood vessels constrict and retain body heat. Thus, the skin maintains Homeostasis.


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