human digestive system working model explanation in english | Best Science Project 2025 | howtofunda
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The digestive system is a complex network of organs and structures responsible for breaking down food, absorbing nutrients, and eliminating waste. It converts food into essential nutrients like vitamins, minerals, proteins, fats, and carbohydrates that the body needs for energy, growth, and repair.

Main Organs of the Digestive System:
Mouth – Where digestion begins, with chewing and saliva breaking down food.
Esophagus – A tube that transports food from the mouth to the stomach.
Stomach – Breaks down food further using stomach acids and enzymes.
Small Intestine – The primary site for nutrient absorption, where enzymes break down food into simpler nutrients.
Large Intestine – Absorbs water and salts, and forms solid waste.
Liver – Produces bile, which helps digest fats.
Pancreas – Produces digestive enzymes and insulin to regulate blood sugar.
The digestive system ensures that our body gets the nutrients it needs while eliminating undigested waste.


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