Nepedia
Back to Discover
Fluent Reader
🧬

Gastroenterology

life science Maturity 11-13 Next article →

Gastroenterology is a special branch of medicine. It focuses on how our bodies use food.

Endoscopy start
Endoscopy start

This study looks at the digestive system. This system includes the gastrointestinal tract, or GI tract. The GI tract is made of the esophagus, stomach, and intestines. It also includes organs like the liver, gallbladder, and pancreas. These parts work together to keep us healthy. Doctors who study these parts are called gastroenterologists.

How does the digestive system work? It follows a specific set of steps to process food. First, food moves through the GI tract using peristalsis. Peristalsis is a way the body moves material along. Next, the body uses digestion to break down the food. This allows the body to absorb nutrients for energy. Finally, the body removes waste through a process called defecation.

GERD
GERD

This constant movement keeps our bodies running smoothly.

People have studied digestion for a very long time. Ancient Egyptian physicians knew about these diseases. A physician named Irynakhty lived in 2125 B.C. during the tenth dynasty. Later, the ancient Greeks thought digestion was like cooking. They believed body heat made food "ripen" in the stomach. In 1780, Lazzaro Spallanzani proved that gastric juice acts on food.

Bozzini Lichtleiter
Bozzini Lichtleiter

He showed that the stomach uses juices to break things down.

Many important discoveries happened in the 1800s and 1900s. In 1805, Philipp Bozzini made the first light-guiding instrument. He called it the Lichtleiter to look inside the body. In 1823, William Prout found hydrochloric acid in stomach juices. Later, William Beaumont studied digestion using a test subject named Alexis St. Martin. In 1932, Burrill Bernard Crohn described Crohn's disease.

McClendon pH-probe
McClendon pH-probe

In 2005, Barry Marshall and Robin Warren won a Nobel Prize. They discovered how a germ called Helicobacter pylori causes ulcers.

Doctors use many tools to see inside the body today. They use an endoscope, which is a thin tube with a camera.

Diagram showing a colonoscopy CRUK 060
Diagram showing a colonoscopy CRUK 060

A colonoscopy looks at the entire colon to find polyps. An EGD examines the esophagus and stomach.

Detailed diagram of an endoscopic retrograde cholangio pancreatography (ERCP) CRUK 001
Detailed diagram of an endoscopic retrograde cholangio pancreatography (ERCP) CRUK 001

Doctors also use ultrasound to see inside. Ultrasound uses sound waves to find problems like appendicitis. These tools help doctors find and treat many different sicknesses.

356 words

Where will your curiosity go next?

Keep exploring at your chosen reading level.

🖼️ Images & Media (7)
File:Bozzini Lichtleiter.jpg
Bozzini Lichtleiter.jpg
File:McClendon pH-probe.png
McClendon pH-probe.png
File:Diagram_showing_a_colonoscopy_CRUK_060.svg
Diagram_showing_a_colonoscopy_CRUK_060.svg
File:Diagram_showing_sigmoidoscopy.svg
Diagram_showing_sigmoidoscopy.svg
File:Endoscopy_start.jpg
Endoscopy_start.jpg
File:Detailed_diagram_of_an_endoscopic_retrograde_cholangio_pancreatography_(ERCP)_CRUK_001.svg
Detailed_diagram_of_an_endoscopic_retrogra...
File:GERD.png
GERD.png
More to explore

🔬 Go deeper

More advanced topics to explore

🪜 Step back

Simpler topics to build understanding

What is Nepedia?

A free, ad-free encyclopedia for children. Every article is written at five reading levels, so the same page works for a five-year-old and a fifteen-year-old — use the level switcher above to see this one change. No account needed to read.