“Hunger” from a Scientific Biopsychological Perspective

The term “bio” means life and “logos” means study. The word biology can thus be defined as the study of life. The study of physiological bases of behavior is known 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 are studied and then the results are compared and are related in order to understand the human behavior. Physiology basically focuses on how the brain functions, how the nervous system and hormones work and how their functions affect human behavior. The Investigation of inheritances focuses on how the mechanism of inheritance works. This paper will shed light on hunger from a scientific biopsychological perspective. When level of glycogen in the liver fall below a certain point, a feeling is experienced by an animal which is known as hunger. The organ responsible for originating this unpleasant feeling is the hypothalamus part of the brain. The hypothalamus alarms the liver and the stomach through the sense receptors.
Animals can basically be divided into three major categories namely the carnivores, the herbivores and the omnivores. Though they all belong to same parent class but there eating habits are pretty different. Carnivores are basically meat eaters. They generally live on live foods. The biological reason behind this is because they have large mouth and very sharp teeth. This allows them to easily get a hold on their prey and tear off the huge pieces of flesh. The short intestinal tract and the huge stomach is perfect for them to hold even an entire big fish. Carnivores prefer to eat meat because there digestive system basically lacks the ability to digest vegetable matter. Even if they try to live on vegetable they won’t be able to survive for long because there body won’t be absorbing any nutrients. As carnivores have a huge stomach. They don’t have to eat food very frequently as there