Homeostasis (article) | Human Body Systems
Added on - 20 Sep 2019
IntroductionThe human body is composed of various cells which work together in order to maintain theproper functioning of the organism. Every single cell, tissues or even organs are seen to performdifferent functions where all the cells present in the body have similar metabolic needs. In orderto ensure the well-being of an individual and his human body, there is a need to maintain aconstant internal environment where the cells are provided with all the necessary things likeoxygen, waste removal and nutrients. The various processes that are controlled by the body inthe internal environment are collectively known as homeostasis. Therefore this process maintainsa stable internal environment in the human body be regulating the various parameters like theinsulin and glucose level in the blood.Homeostasis is maintained by all the complementary activities of the body. The process ofstability, equilibrium and balance present within the body or the cell is referred to ashomeostasis. The whole process of adjusting to the cell systems can be termed as homeostaticregulation as the internal as well as external environments are changing constantly.DiscussionFeedback Regulation LoopsIn the process of homeostasis, the major role is played by the endocrine system as the hormonesare seen to regulate the blood cells and their activity. The hormones that are released in bloodsare seen to be controlled by a stimulus. This stimulus is seen to decrease as well as increase thesecretion of the hormones. Now the response to the stimulus is seen to change the internalconditions of the body and sometimes results in becoming a new stimulus. Stimulus is seen tocontrol the hormone release into the blood. The mechanism of self-adjusting is termed asfeedback regulations. When the response to the stimulus is seen to produce a significant effect on
the original stimulus, the feedback regulation is seen to take place. The feedback is determinedby the type of response. When the response to the stimulus is seen to reduce the originalstimulus, the negative feedback occurs. Whereas the positive feedback takes place when theoriginal stimulus is increased by the response to a stimulus. The positive feedback speeds up thechange directions (Bbc.co.uk., 2017).Homeostasis of Blood Glucose LevelsThe cells of our body require glucose as the main source of fuel. Pancreas secrets insulin whichhelps in facilitation of the glucose transports into every cells. When the glucose is transported tothe cells using the bloodstream after any meal, the blood glucose level is lowered by the insulin.The production of the glucose among fatty acids, amino acids and glycogen is inhibited. Thisresults in stimulation of the glycogen from glucose therefore the insulin functions in order toreduce the glucose level of the blood. Another hormone called glucagon is seen to raise theglucose level in the blood. This is performed by breakdown of glycogen into glucose and glucoseis produced from the fatty acids, amino acids and stimulation of glucose release from liver.Therefore, the control of glucose level in blood is the example of negative feedback.
Homeostasis of Water ContentEven the body temperature, the content of water in the human body etc. are regulated by theprocess of homeostasis. The content of water is seen to protect the cells to prevent large extent ofwater to enter as well as leave from them. The water loss is controlled by the sweating, urine,exhaling (Brodie, M. and Richardson, M., 2005). This procedure can easily be explained by thefollowing diagram: