"The small intestine or small bowel is an organ in the gastrointestinal tract where most of the absorption of nutrients from food takes place."
An overview of the structure and function of the small intestine, including the duodenum, jejunum, and ileum, as well as the role of digestive enzymes, bile, and other substances.
Anatomy of the Small Intestine: This topic involves the study of the structure, parts, and functions of the small intestine.
Digestive Processes in the Small Intestine: This topic covers the processes taking place in the small intestine, including absorption, secretion, and digestion.
Hormonal Regulation in the Small Intestine: This topic explains the role of hormones in the regulation of the functions of the small intestine.
Enzymes of the Small Intestine: This topic covers the various enzymes involved in the digestion of food in the small intestine.
Microbial Ecology of the Small Intestine: This topic discusses the microorganisms present in the small intestine and their roles in digestion.
Small Intestine Disorders: This topic covers the various disorders that affect the small intestine, including celiac disease, Crohn's disease, and irritable bowel syndrome.
Small Intestine Motility: This topic explains the movements of the small intestine and how they help in digestion and absorption.
Small Intestine Innervation: This topic covers the nerves that supply the small intestine and their role in controlling its functions.
Small Intestine Blood Supply: This topic explains the blood supply of the small intestine and its role in supporting its functions.
Small Intestine Lymphatic System: This topic discusses the role of the lymphatic system in the absorption of nutrients from the small intestine.
Duodenum: The first part of the small intestine, responsible for neutralizing stomach acid and breaking down food with digestive enzymes from the pancreas.
Jejunum: The second part of the small intestine, responsible for absorbing most of the nutrients from food.
Ileum: The final part of the small intestine, responsible for absorbing remaining nutrients, as well as vitamin B12 and bile salts.
Peyer’s Patches: Small lymphoid tissue clusters found in the ileum that help protect against foreign substances and harmful bacteria.
"It lies between the stomach and large intestine."
"The small intestine is about 5.5 metres (18 feet) long."
"Although it is longer than the large intestine, it is called the small intestine because it is narrower in diameter."
"It receives bile and pancreatic juice through the pancreatic duct to aid in digestion."
"The duodenum, the shortest, is where preparation for absorption through small finger-like protrusions called villi begins."
"The jejunum is specialized for the absorption through its lining by enterocytes: small nutrient particles which have been previously digested by enzymes in the duodenum."
"The small intestine has three distinct regions – the duodenum, jejunum, and ileum."
"The main function of the ileum is to absorb vitamin B12, bile salts, and whatever products of digestion that were not absorbed by the jejunum."
"It receives bile and pancreatic juice through the pancreatic duct to aid in digestion."
"Small finger-like protrusions called villi."
"It receives bile and pancreatic juice through the pancreatic duct to aid in digestion."
"The duodenum, the shortest..."
"The jejunum is specialized for absorption..."
"...enterocytes: small nutrient particles..."
"The main function of the ileum is to absorb vitamin B12, bile salts..."
"...absorption of nutrients from food takes place."
"Although it is longer than the large intestine..."
"...whatever products of digestion that were not absorbed by the jejunum."
"It receives bile and pancreatic juice through the pancreatic duct..."