Outline and Evaluate the Role of Neural Mechanisms Involved in Controlled Eating and Satiation

Outline and evaluate the role of neural mechanisms involved in controlled eating and satiation (24 marks) Hunger is pioneer by many different cues, both biological and environmental. The frame is controlled by homeostasis which is how we maintain our constant internal environment. Homeostasis is controlled by a negative feedback genus Helix which assumes that all body variables have a stripe point. The establish point helps the body regulate its weight and therefore knows how some(prenominal) the person should be eating. Hunger is based on blubber weight stores (lipostatic hypothesis), glucose levels (glucostatic hypothesis) and cellular energy. The dual centre model of cater describes the dickens areas of the hypothalamus involved in eating behaviour. When we are hungry we disunite eating, the bodys blood glucose levels increase and so do ghrelin levels. When we are full the Ventro Medial Nucleus (VMN) of the hypothalamus is activated which inhibits eati ng and satiety is reached. Blood glucose levels drop again subsequently eating and the Lateral hypothalamus is activated (which initiates feeding) and we become hungry and the bring starts again. at that place are several neurotransmitters in the body which are alike involved in eating regulation. Ghrelin is a ductless gland which is released when the stomach is empty so it triggers eating.

The sulfur most important hormone is leptin and this is released from adipocytes, and the more fat a person has the more leptin is released and it acts as a satiety argue so stops regimen intake. Cummings et al (2004) did a study into the effects of ghrelin on people. He used 6 mal! e participants and they were monitored all(prenominal) 5 transactions between their noontide meal and when they requested their evening meal. Their hunger levels were also assessed every 30 minutes. Ghrelin levels fell after eating lunch, were at their last(a) after 70 minutes and peaked at the eon they requested their evening meal. These findings realize the role of ghrelin as an propensity signal. However a blue sample...If you want to get a full essay, order it on our website: BestEssayCheap.com

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