Title: Digestive System: Role of Stomach and Small Intestine
Headings: Digestive System: Role of Stomach and Small Intestine
Digestive System: Role of Stomach and Small Intestine
Let’s see what happens to the food as it moves through various organs of the digestive system...
From the above overview, it is clear that...
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Content: Gastric lipase splits triglyceride fats into fatty acids and diglycerides. Pepsin breaks proteins into its constituent amino acids. The chemical digestion is only initiated in the stomach as the digestive enzymes only structurally simplify and prepare complex proteins and fats for further digestion. Small intestine is a 22 feet long muscular tube made up of 3 segments — duodenum, jejunum, and ileum. Peristalsis is at work in this organ too. The duodenum is the initial-most, smallest section of small intestine that connects to the stomach through pyloric sphincter muscle. Chyme is mixed with bile from the liver and pancreatic juice from the pancreas to complete its digestion here. The jejunum is the middle section of the small intestine that serves as the primary site of nutrient absorption. The ileum is the final and the longest section of the small intestine that empties into the large intestine via the ileocecal sphincter. Complete absorption of nutrients that were missed in the jejunum, occurs here.