The organ that sits directly behind the belly button is the small intestine. The small intestine is a long, narrow tube that is part of the digestive system. It is located in the abdomen, just below the stomach and behind the belly button. The small intestine is about 20 feet long in adults and is coiled up in the abdomen to fit within the limited space.
The small intestine is responsible for the absorption of nutrients from the food we eat. After food is broken down in the stomach, it enters the small intestine where digestive enzymes and other substances from the pancreas and liver continue to break down the food into smaller molecules that can be absorbed by the body.
The small intestine has three sections: the duodenum, the jejunum, and the ileum. The duodenum is the first part of the small intestine and is responsible for receiving partially digested food from the stomach and mixing it with digestive juices from the pancreas and liver. The jejunum and ileum are responsible for absorbing nutrients from the digested food and passing it into the bloodstream for distribution throughout the body.
The small intestine is lined with tiny finger-like projections called villi, which increase the surface area of the intestine and allow for greater absorption of nutrients. The villi are covered in even smaller projections called microvilli, which further increase the surface area of the small intestine and enhance nutrient absorption.
While the small intestine is an essential part of the digestive system, it is also vulnerable to a variety of health problems. Some of the most common small intestine problems include:
- Intestinal obstruction: a blockage in the small intestine that can be caused by a variety of factors, including adhesions, hernias, tumors, and inflammatory bowel disease.
- Irritable bowel syndrome (IBS): a chronic condition that affects the large and small intestine and can cause a range of symptoms, including abdominal pain, bloating, and diarrhea or constipation.
- Crohn’s disease: a chronic inflammatory condition that can affect any part of the digestive tract, including the small intestine. Symptoms can include abdominal pain, diarrhea, and weight loss.
- Celiac disease: an autoimmune disorder that causes the small intestine to become inflamed and damaged in response to gluten consumption. Symptoms can include abdominal pain, diarrhea, and nutrient deficiencies.
- Small intestinal bacterial overgrowth (SIBO): a condition where there is an abnormal growth of bacteria in the small intestine. Symptoms can include abdominal pain, bloating, and diarrhea.
In conclusion, the small intestine is an essential organ that sits directly behind the belly button. It plays a critical role in the digestive system by absorbing nutrients from the food we eat and passing them into the bloodstream for distribution throughout the body. While the small intestine is vulnerable to a variety of health problems, proper diet, exercise, and medical care can help prevent and treat many of these issues.