Nutrition in animals · प्राणियों में पोषण
A free Biology lesson for Class 7 children.
Digestion breaks food down into simple substances the body can use.
In the mouth, teeth chew the food and saliva begins to digest starch.
The food pipe pushes the food down to the stomach.
The stomach churns the food with acid and digestive juices.
The liver makes bile, which helps to digest fats.
Digestion is completed in the small intestine.
Tiny finger-like villi in the small intestine absorb the digested food.
The large intestine absorbs water. The waste that is left passes out of the body.