“Hunger” from a Scientific Biopsychological Perspective

The edge bio remembers life and logos means tuition. The word biology domiciliate thus be defined as the study of life. The study of physiologic bases of behavior is know as Biological psychology. Biological psychology is the study in three ways namely the comparative method, Physiology and Investigation of inheritance. In the comparative method a number of different species be analyse and then the results are compared and are related in order to take in the gay behavior. Physiology fundamentally focuses on how the brain functions, how the nervous system and hormones f tire and how their functions be active human behavior.The Investigation of inheritances focuses on how the mechanism of inheritance works. This opus will shed light on hunger from a scientific biopsychological perspective. When level of glycogen in the colorful fall below a authentic point, a aromaing is experienced by an animal which is known as hunger. The organ responsible for originating this unpleas ant tonicitying is the hypothalamus part of the brain. The hypothalamus alarms the equalr and the stomach through the sense receptors. Animals hatful basically be change integrity into three major categories namely the carnivores, the herbivores and the omnivores.Though they all belong to resembling parent class but on that point haveing habits are bonny different. Carnivores are basically meat eaters. They generally live on live regimens. The biological reason behind this is because they have large mouth and genuinely sharp teeth. This allows them to easily hurt a hold on their give and tear off the vast pieces of flesh. The short intestinal tract and the huge stomach is perfect for them to hold even an entire big fish. Carnivores privilege to eat meat because there digestive system basically lacks the exponent to digest vegetable matter.Even if they try to live on vegetable they wont be able to survive for long because there be wont be absorbing any nutrients. As c arnivores have a huge stomach. They dont have to eat food very a great deal as there serving coat is normally very huge. A lion is an solve of carnivore. Herbivores on the opposite hand are totally opposite to carnivores. The proper diet for herbivores consists of plants, alga and fruits. They have adaptive themselves according to the biology of their ashes. There specialized intestines leads their eubstance capable of breaking down matter.They have flat teeth through which they grind food before swallowing. The herbivores must have to eat frequently because their stomach lacks the ability to hold large volumes of food. They need to take meals well-nigh(prenominal) times a day and there serving size is usually very small. An example of a herbivore is a zebra. Omnivores stack eat about anything. They can vegetables and meat. Their teeth and digestive are made in such a way that they can adapt themselves to have the properties of both the omnivore and the herbivore. An ex ample of an omnivores are humans. The part of the brain responsible for stimulating hunger is the hypothalamus.The hypothalamus can be divided into areas namely the lateral hypothalamus and the ventro hypothalamus. The lateral hypothalamus is the part that makes you feel hungry where as the ventromedial hypothalamus is the part that make you feel honorable and satisfied. When a person is eating a big meal and believes he no more has the capacity to eat more, the ventromedial hypothalamus is doing the job to imply you. Signal impulses are gene localized by the hypothalamus at appropriate times in order to indicate that when to eat and when to stop. The hypothalamus is trained to maintain a certain optimal body lading.If the body weight falls below the marginal line, the hypothalamus dismounts the metabolic rate and when we eat it tells the body to stop eating and increases the metabolic rate to fire excess foods. The neurotransmitter excessively substances are eating habits. T he neurotransmitters that have carnal knowledge with hunger is serotonin and dopamine. The serotonin is basically a neurotransmitter that keeps us happy. When we feel good, our body suppresses hunger. People who are usually depressed tend to gear up on weight because they feel hungry all the time. Dopamine neurotransmitter is also dependant on amino acids in the body.Dopamine levels can affect your body weight. A low dopamine level means that youre less likely to consume amino acids in the body. As a result, there is more intake of carbohydrates and other fats and then you put on weight because you feel hungry. The processed or packaged food has certain chemical in them that effect your neurotransmitters levels in the body and thus you get hunger pangs. The hormones that affect our appetite and hunger is Ghrelin. Ghrelin levels increase before meals and lower down after meals. Gherlin has been discovered as the first hunger go hormone. www. soc. ucsb. edu) Obesity is a disease in which body consumes a atomic reactor of fat and chronic imbalances takes place. Science has proved that genes do play a role in obesity. Genes that are related to obesity can effect the metabolic rate. They could also affect human behavior, changing our lifestyles and increasing the attempt of being obese. Science has proved that some genes control appetie. Such genes make us less able to sense when a feeling full where are as some genes make our bodies more responsive to food by affecting our sense of taste, smell or sight of food. around genes make us feel lazy and less active and as result people put on weight. Epi ancestral is a birth presumption to a new science. Epigenetic basically involve the study of gene operation in which though they do not involve alterations to the genetic formula but can still be passed down to at least(prenominal) one successive generation. The cellular material for expressing these gene patterns is known as epigenome. (www. britannica. com) Bo th nature and nurture have affects on our diet and body size. The evolutionary factors that basically shape the genetics that we inherit from our parents and ancestors is known as Nature.Things that influence us since we were born is nurture. The range of human potential is basically determined by nature where as the ways in which the human potential is actualized is determined by nurture. Your diet and body size is touch both by the nature and the nurture. Parents that are usually tall are mostly likely to have kids that are going to be tall. This is genetic and thus nature has it roles. However, parents who are short does not necessarily mean will have kids that will be short too. If kids are given proper food, they exercise well and they remain active so they can affect their body size.Thus nurture has its role as well. (Sharpe) As for diet, your appetite is affected both by nature and nurture. In some families, they love to eat so their kids are mostly likely to eat as well. P eople who generally have tendencies to put on weight usually have low metabolic rate and their genes can be passed on to children. Hence nature plays it role but if the kids control their appetite, exercise well they can adapt their body and bring changes. This is where nurture plays its role. (www. answers. com)