Monday, September 23, 2019
Homeostasis in humans Essay Example | Topics and Well Written Essays - 1500 words
Homeostasis in humans - Essay Example Core to this is the human bodyââ¬â¢s management of a variety of highly complex relations, critical in maintaining either a return to, or a balance of, normal functionality of the body (Guyton & Hall, 2006:310). This is achieved through three core types of processes i.e. thermoregulation, osmo-regulation and chemical regulation. Such interactions vitally facilitate changes, which are compensatory in nature and hence supportive of both psychological and physical human functionality. In the case of an imbalance, a function is usually altered, causing a reversal of the functionality back to its normal settings (Guyton & Hall, 2006:317). This is exemplified by the function of human skin, with an increase in temperature necessitating thermo-receptor feedback to the brainââ¬â¢s hypothalamus. This results in increased sweating, as a way of balancing the temperature. In the case of blood pH imbalance, chemoreceptors send messages to the brainââ¬â¢s respiratory center, thus enhancing the affected individualââ¬â¢s respiratory rate (Guyton & Hall, 2006:324). Other processes crucial in the maintenance of homeostasis include the bodyââ¬â¢s balance of electrolyte and blood pressure levels. Core to this body functionality, is the input of various body organs i.e. the human brain, the kidneys and the liver. The latter twoââ¬â¢s role in maintaining homeostasis is undisputed, with the brainââ¬â¢s endocrine system, hypothalamus sector, and its autonomic nervous system being core to this functionality. The human pair of kidneys is on their part essential for a number of roles i.e. the re-absorption of substances into the blood circulation; the excretion of human waste matter and urea; the regulation of blood water levels and blood pH, in addition to maintaining iron and salt levels in circulation (Maton et al., 1993:35). As Marieb and Hoehn (2007) allude, the liver provides core maintenance of
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