Human Digestion and Metabolic Regulation
The Human Digestive System: An Introduction
The digestive system transfers organic nutrients, vitamins, minerals, and water from the foods we eat to the internal environment. Upon entering the body, food moves through the gastrointestinal (GI) tract, and the nutrients are absorbed and transported to the circulatory system where they are utilized.
Net Gain to the Body
Food and air are the primary sources of net gain to the body.
Distribution within the Body
Nutrients and substances are distributed throughout the body via the GI tract, lungs, storage deposits, and metabolism.
Net Loss from the Body
Excretion from the body occurs via the lungs, GI tract, kidneys, and skin.
Epithelial Cells
Epithelial cells separate compartments and are crucial in the digestive... Continue reading "Human Digestion and Metabolic Regulation" »
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