The senses of taste and smell allow us to separate undesirable or even lethal foods from those that are pleasant to eat and nutritious. The sense of smell also allows animals to recognize the proximity of other animals or even individuals among animals. Finally, both senses are strongly tied to primitive emotional and behavioral functions of our nervous systems.
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This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.