Human digestive system · पाचन तंत्र

When we eat, our body breaks food down into tiny pieces that can pass into the blood. This is digestion. Food travels through one long tube — the alimentary canal — from the mouth to the anus.

Human digestive system games

Tap a part of the diagram

You will hear its name and see what it does.

Parts and what they do

Part	What it does
1. Mouth मुख	Teeth cut and chew food into small pieces. The tongue mixes it with saliva so it can be swallowed.
2. Salivary glands लार ग्रंथियाँ	Make saliva, which wets the food and starts breaking starch down into sugar.
3. Oesophagus (food pipe) ग्रासनली (भोजन नली)	A tube that carries food from the mouth to the stomach. Its walls push the food down in waves.
4. Liver यकृत	The largest gland in the body. It makes bile, which helps to digest fats.
5. Gall bladder पित्ताशय	A small bag that stores bile made by the liver.
6. Stomach आमाशय	Churns the food. It makes acid that kills germs and juices that start digesting proteins.
7. Pancreas अग्न्याशय	Makes pancreatic juice, which digests carbohydrates, proteins and fats.
8. Small intestine छोटी आँत (क्षुद्रांत्र)	The longest part (about 7.5 m). Digestion is completed here and digested food passes into the blood.
9. Large intestine बड़ी आँत (बृहदांत्र)	Wider and shorter (about 1.5 m). It takes in water and some salts from the undigested food.
10. Rectum मलाशय	Stores the waste (faeces) for some time.
11. Anus गुदा	The opening through which waste leaves the body.

The path of food

Mouth → Oesophagus → Stomach → Small intestine → Large intestine → Rectum → Anus

The liver, gall bladder, pancreas and salivary glands are glands. Food does not pass through them, but their juices help to digest it.

Five steps of nutrition

Ingestion — taking food into the mouth.
Digestion — breaking food into simple, soluble parts.
Absorption — digested food passes into the blood (in the small intestine).
Assimilation — the body uses the food to make new parts and get energy.
Egestion — removing the undigested waste through the anus.

Fact: the inner wall of the small intestine has thousands of finger-like villi that give it a huge surface to absorb food.

Print

The chart has the labelled diagram and what each part does. The worksheet has the diagram with blank labels and questions.

Human digestive system · पाचन तंत्र

Part	What it does
1. Mouth मुख	Teeth cut and chew food into small pieces. The tongue mixes it with saliva so it can be swallowed.
2. Salivary glands लार ग्रंथियाँ	Make saliva, which wets the food and starts breaking starch down into sugar.
3. Oesophagus (food pipe) ग्रासनली (भोजन नली)	A tube that carries food from the mouth to the stomach. Its walls push the food down in waves.
4. Liver यकृत	The largest gland in the body. It makes bile, which helps to digest fats.
5. Gall bladder पित्ताशय	A small bag that stores bile made by the liver.
6. Stomach आमाशय	Churns the food. It makes acid that kills germs and juices that start digesting proteins.
7. Pancreas अग्न्याशय	Makes pancreatic juice, which digests carbohydrates, proteins and fats.
8. Small intestine छोटी आँत (क्षुद्रांत्र)	The longest part (about 7.5 m). Digestion is completed here and digested food passes into the blood.
9. Large intestine बड़ी आँत (बृहदांत्र)	Wider and shorter (about 1.5 m). It takes in water and some salts from the undigested food.
10. Rectum मलाशय	Stores the waste (faeces) for some time.
11. Anus गुदा	The opening through which waste leaves the body.

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Human digestive system — worksheet

Name: ____________________ Date: __________

A. Label the parts of the diagram.

B. Answer these.

Answers: kheloaurseekho.in/science/human-digestive-system/

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