Jejunum meaning

Jejunum definitions

The jejunum is the middle part of the small intestine, located between the duodenum and the ileum. It plays a crucial role in the digestion and absorption of nutrients from food.

Structure of the Jejunum

The jejunum is approximately 2.5 meters long in adults and is characterized by its large diameter and many circular folds called plicae circulares. These folds increase the surface area of the jejunum, allowing for greater absorption of nutrients.

Function of the Jejunum

The primary function of the jejunum is the absorption of nutrients such as sugars, amino acids, and fatty acids. It is lined with millions of tiny projections called villi and microvilli, which further increase the surface area available for absorption. These structures also contain specialized cells that transport nutrients into the bloodstream.

Role in Digestion

As food passes from the stomach to the small intestine, it is mixed with digestive juices from the pancreas and liver, which aid in breaking down carbohydrates, proteins, and fats. The jejunum is where the majority of nutrient absorption takes place, allowing essential molecules to enter the bloodstream and be transported throughout the body.

Common Disorders of the Jejunum

Disorders of the jejunum can impact its function and lead to symptoms such as abdominal pain, bloating, diarrhea, and malabsorption. Conditions like celiac disease, Crohn's disease, and intestinal infections can affect the health of the jejunum and disrupt its ability to absorb nutrients efficiently.

Treatment of Jejunal Disorders

Treatment for disorders of the jejunum often involves a combination of medication, dietary changes, and sometimes surgery. In cases of severe malabsorption, patients may require nutritional support such as vitamin supplements or intravenous feeding to maintain adequate nutrient levels.

In conclusion, the jejunum is a vital part of the digestive system responsible for absorbing essential nutrients from food. Its structure and function are intricately designed to facilitate the absorption process and support overall health and well-being.

Jejunum Examples

1. The jejunum is the middle portion of the small intestine.
2. The nutrients are absorbed in the jejunum after the food is digested.
3. The surgeon performed a resection of the jejunum to treat the obstruction.
4. The inflammation in the jejunum caused abdominal pain and discomfort.
5. The doctor ordered an X-ray to check for any abnormalities in the jejunum.
6. The jejunum is responsible for the absorption of sugars and amino acids.
7. The blood supply to the jejunum comes from the superior mesenteric artery.
8. Damage to the jejunum can lead to malabsorption of nutrients.
9. The jejunum connects the duodenum to the ileum in the digestive tract.
10. The health of the jejunum is crucial for proper digestion and nutrient absorption.

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