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When food is chewed,
saliva starts digesting
carbohydrates.
pancreas
Many kinds of digestive
enzymes are made here.
small intestine
large intestine
DIGESTIVE SYSTEM
THE HUMAN BODY 
MOUTH
esophagus
Muscles, in a process
called peristalsis, push
the food down into your
stomach.
stomach
Everything is blended
with digestive juices.
Hydrochloric Acid kills
bacteria. Enzymes break
down proteins.
liver
A green liquid called bile,
which is stored in your
liver, is secreted to break
down fats.
Food is mixed with bile
from your liver and juices
from your pancreas to
be sent back to your liver
for more processing.
Indigestible food and
water are processed,
stored and dispersed.
Solid waste passes from
the rectum in order to
leave your body.
anus
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What happens
to the food
you eat?

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FAQs on Infographics: Digestive Sysytem - Science for Class 4

1. What are the main organs involved in the digestive system?

Ans. The main organs involved in the digestive system include the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. Accessory organs such as the liver, pancreas, and gallbladder also play crucial roles in digestion by producing enzymes and bile.

2. How does the digestive process work?

Ans. The digestive process begins in the mouth, where food is mechanically broken down by chewing and mixed with saliva. It then travels down the esophagus to the stomach, where it is further digested by gastric juices. Next, the partially digested food enters the small intestine, where nutrients are absorbed into the bloodstream. Finally, waste products are moved to the large intestine and eventually excreted through the rectum.

3. What role does the liver play in digestion?

Ans. The liver produces bile, which is essential for the digestion and absorption of fats. It also processes nutrients absorbed from the small intestine, detoxifies harmful substances, and stores vitamins and minerals, making it a vital organ for maintaining overall health and supporting the digestive system.

4. What are common digestive disorders?

Ans. Common digestive disorders include gastroesophageal reflux disease (GERD), irritable bowel syndrome (IBS), constipation, diarrhea, and inflammatory bowel diseases like Crohn's disease and ulcerative colitis. These conditions can affect the efficiency of the digestive process and may require medical attention or lifestyle changes.

5. How can I maintain a healthy digestive system?

Ans. Maintaining a healthy digestive system involves eating a balanced diet rich in fiber, staying hydrated, exercising regularly, managing stress, and avoiding excessive consumption of processed foods and sugars. It's also important to listen to your body and seek medical advice if you experience persistent digestive issues.

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Oct 01, 2025 Last updated

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