Digestive System: Process, Parts & Its Importance
The digestive system plays a vital role in converting food into essential nutrients and energy, beginning at the mouth and ending at the anus. It comprises the gastrointestinal (GI) tract and the biliary tract, involving key organs such as the stomach, small intestine, liver, and pancreas. Maintaining digestive health through proper nutrition, hydration, and physical activity is essential for overall well-being
Our digestive system is a crucial component of our body that is involved in the breakdown of food and converts it into nutrients and energy. It is a long channel through which food passes, beginning from the mouth and terminating the moment the waste is excreted from the body. During the digestive process, many different processes go on, and there is more than one part of the body that is involved in digesting the food. When each part of the digestive system is performing well, it keeps us healthy overall.
What is the digestive system?
The digestive system consists of a set of organs that digest food and beverages to convert them into nutrients that the body can utilise as well as remove waste products that are not needed by the body.
There are two primary parts of the digestive system:
- The GI (gastrointestinal) tract, through which food passes and is broken down.
- The biliary tract produces juices such as bile and enzymes to aid digestion.
What does the digestive system do?
Your digestive system normally does two things:
- Break down food and liquids into their smaller constituent parts, which your body can utilise.
- Eliminate waste that your body does not need by converting it to poop.
How Does the Digestion Process Work?
Here is what occurs when you eat:
| Step | What Happens |
| 1. Before Eating | Just seeing or smelling food causes your mouth to make saliva. |
| 2. Mastic | You break up food into smaller bits and blend it with saliva to facilitate easier swallowing. |
| 3. Swallow | Food travels down your oesophagus, a pipe that directs it to your stomach. |
| 4. In the Stomach | The food is further broken down by stomach acid and enzymes. |
| 5. Small Intestine | Food is converted into liquids, and nutrients are absorbed by your body. |
| 6. Assistance by Organs | The gallbladder, pancreas, and liver release juice to digest food. |
| 7. Large Intestine | Wasted food remains become dung, which passes out through your rectum and anus. |
How many parts of the digestive system are there?
Source: niddk.nih.gov
There are two divisions of the digestive system, which are:
- The GI tract
This is a very long tract consisting of a chain of empty organs through which food travels. If it were uncoiled, it would be approximately 30 feet long!
| Part | What It Does |
| Mouth | The beginning of digestion. You chew food and blend it with saliva. |
| Esophagus | A pipe that transports food from your mouth to your stomach. |
| Stomach | Processes food into a thick liquid through the use of acid and enzymes. |
| Small Intestine | It absorbs most nutrients from food. It is roughly 22 feet long. |
| Large Intestine | Turns leftovers into waste and expels it out of the body. |
- The Biliary Tract
They produce and secrete chemicals that enable food to be digested more effectively.
| Part | What It Does |
| Liver | Produces bile and aids digestion of nutrients. It is located under your ribs on your right side. |
| Gallbladder | It stores bile and channels it to your small intestine. |
| Bile ducts | Transport bile from the gallbladder and liver to your intestine. |
| Pancreas | Produces enzymes that digest food. It sits behind the stomach. |
Why Keeping It Healthy is Important
If your digestive system functions as it should, your body receives the nutrients and energy it needs. Your body is also able to expel waste normally. A healthy diet, water, exercise, and stress reduction all aid your digestion. If you feel bloated frequently, experience pain, or see your poop changing, it is a good idea to consult a physician.
Prabhat Mishra is a Subject Matter Expert and digital journalist with an extensive background in the competitive exam landscape and over 4 years of experience in education, national and international news, and current affairs. Over his tenure with top knowledge platforms like Mentorship India, IAS BABA, IAS SARTHI, and now Jagran Josh, he has a deep understanding of government exams like UPSC and State PCS, including UP and Bihar, as he has already qualified for the UPPCS 2022 Mains and Bihar 68th Mains. With his core expertise in history, polity, geography & current affairs, he specialises in creating well-researched, aspirant-centric content and simplifying complex topics for competitive examinations.
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