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Absorption and transport of nutrients in humans
Absorption and transport of nutrients in humans
Biology • Human digestive system
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Carbohydrates, proteins and fats in food are broken down by digestion into smaller molecules that can be absorbed.
Nutrients are absorbed into the blood, which transports them around the body to where they are needed by cells.
The molecules of some nutrients are small enough to be absorbed into the blood by diffusion.
Adaptations of the small intestine lining that increase the amount of absorption.