10. You are going out to dinner with a friend and on your way there you are able

Question

10. You are going out to dinner with a friend and on your way there you are able to say you “feel very hungry”. Knowing what you know about hunger, please describe 2 of the peptides/hormones that could be at work (what is it, is it high or low, etc.) and what hypothalamic nucleus is vital. After you finish eating, you feel full. Describe 2 neurochemicals at work to convey the sense of “fullness” you experience after your meal (what they are, are they high or low, etc.) and what hypothalamic nucleus is vital.

(its physiological psychology question )

Explanation / Answer

2 of the peptides/hormones that could be at work (what is it, is it high or low, etc.) and what hypothalamic nucleus is vital:

Hunger is the feeling of physiological need to eat edible material and hormones & neurotransmitters in the “limbic system” control this feeling of hunger and appetite. Hunger is a condition, which meticulously used to depict “the condition of those who have been suffering from deficiency of adequate nutritional food sources therefore frequent experience of the hunger sensation”. Hunger is going to be controlled by the lateral hypothalamus of brain and the ventromedial hypothalamus. Neuronal networks into the gastrointestibnal tracts from the central nervous system are going to trigger feeling of hunger. Normally the release of “serotonin and dopamine” is going to trigger feeling of hungry therefore, when you us drug “Phentermine”, an anti-obese drug and anorectic and reduces hunger by reducing the release of neurotransmitters such as "dopamine" and serotonin into synapses thereby decreasing hunger perception. Ghrelin is secreted by gastric mucosa, and it is having opposite effects to leptin, it induces the feeling of hunger. Higher levels of neuropeptide-Y (NPY) levels is going to reduce the feeling of fullness from a meal. The lateral hypothalamic- nucleus of the hypothalamus is vital in depicting these alterations of hunger

2 neurochemicals at work to convey the sense of “fullness” you experience after your meal:

Satiety is referred as absence of hunger feeling. Increased fat reserves in the body causes release of "leptin & low neuropeptide Y level" by the adipose cells, this circulating leptin acts on hypothalamus and causes a feeling of satiety. Therefore, intake of food decreases. Thus, maintaining body fat reserves are the main function of leptin. The ventromedial nucleus of the hypothalamus is vital in depicting these alterations of satiety

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