Digestive System Organs: Stomach, Intestines, and Gut Functions

Your digestive system is like a conveyor belt with specialized workers. Each organ has a specific role in breaking down food, absorbing nutrients, and removing waste.

Let's walk through the journey step by step.

Located at the entry of the digestive system. This is where digestion begins.

• Chewing breaks food into smaller pieces

• Saliva adds enzymes to start breaking down carbs

• The tongue mixes and pushes food back for swallowing

Found in the throat and chest. Their job is to move food down.

• Pharynx directs swallowed food into the esophagus.

• Esophagus pushes food to the stomach using muscular waves called peristalsis.

Located in the upper abdomen, under the rib cage.

• Stores food and mixes it with gastric juices

• Acid and enzymes turn food into a semi-liquid called chyme

• Slowly releases chyme into the small intestine

A long, coiled tube in the lower abdomen. Divided into three sections:

Duodenum: Receives chyme along with bile and pancreatic enzymes.

Jejunum: Absorbs most vitamins, proteins, and carbohydrates.

Ileum: Absorbs remaining nutrients, especially fats and vitamin B12

Surrounds the small intestine in a square-like frame.

• Absorbs water and minerals from leftover material

• Houses trillions of gut bacteria that support digestion and immunity

• Forms solid waste for elimination

The final stretch of the digestive tract.

Rectum: Stores stool until ready for release.

Anus: Controls the final elimination of waste.

Not part of the main food tube, but essential for digestion.

Liver: Produces bile to break down fats.

Gallbladder: Stores and releases bile when needed.

Pancreas: Produces enzymes and bicarbonate to neutralize stomach acid.

Your small intestine is about 20 feet long, yet fits neatly inside your abdomen thanks to tight folding.

Every organ in your digestive system plays a specific role. When one part struggles, the whole process slows down.

Understanding these parts helps you recognize why gut health affects energy, immunity, mood, and overall wellbeing.

Want to see how these organs actually work together?
Read: [How Your Digestive System Works →]

Curious about what can go wrong?
Explore: [Digestive System Risks →]

Looking for ways to support your gut health?
Discover: [How to Support Your Digestive System →]

-Johns Hopkins Medicine: Digestive System Overview