The digestive system involves all organs responsible for digestion. The four functions of the digestive system are digestion, absorption, excretion and assimilation.
What is digestion?
Digestion is the breakdown of complex food materials into their simplest form, which is done by digestive system.
The main functions of digestive system are:
- Digestion: breakdown of food.
- Absorption: The absorption of simple food into blood.
- Assimilation: movement of digested food molecules into the cells and are used.
- Excretion: the elimination of waste materials.
Thus, these are the four functions of digestive system.
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