smáþörminn

The smáþörminn, commonly known as the small intestine, is a vital organ in the digestive system of many animals, including humans. It is a long, convoluted tube that extends from the stomach to the large intestine. The primary function of the smáþörminn is to absorb nutrients and minerals from the food we eat.

The smáþörminn is divided into three main sections: the duodenum, the jejunum, and the ileum. The duodenum is the shortest and widest part, where most chemical digestion takes place with the help of enzymes from the pancreas and bile from the liver. The jejunum is the middle section and is where most of the absorption of nutrients occurs. The ileum is the final section and connects to the large intestine, responsible for absorbing vitamin B12, bile salts, and any remaining nutrients.

The inner lining of the smáþörminn is characterized by numerous folds, villi, and microvilli. These structures greatly increase the surface area available for absorption, allowing for efficient uptake of digested food. The muscular walls of the smáþörminn contract and relax in a process called peristalsis, which propels food through the digestive tract.

The smáþörminn plays a crucial role in overall health by breaking down food into molecules that the body can use for energy, growth, and repair. Issues with the smáþörminn can lead to various digestive problems, including malabsorption and nutrient deficiencies.