VTCT - Nutrients in the Digestive System

Nutrients in the Digestive System

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Unit: Digestive System

Utilisation of Nutrients in the Digestive System

As food travels through the digestive system, macromolecules required by the body are absorbed and utilised. The absorption of macromolecules is important in enabling growth, promoting health and enabling the body to function properly.

The table below demonstrates the types of nutrients that are absorbed in the digestive system and how these nutrients are utilised within the body

Table of Nutrients and Functions

NUTRIENTS	FUNCTIONS
CARBOHYDRATES	A principal energy source, serves as the basic material from which many other kinds of molecules are built.
VITAMINS AND MINERALS	Has many functions including growth and cell repair.
LIPIDS	An alternative energy source to carbohydrates. Also provides insulation and cell membrane structure.
PROTEINS	Promotes growth and repairs cells.
WATER	An intake of 2-3 litres per day is needed. It facilitates transportation, digestion, excretion, chemical and metabolic reactions. Helps regulate body temperature.

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