Digestion Is Completed In The Small Intestine

key notes :

Role of the Small Intestine:

• The small intestine is the longest part of the digestive system, and it’s where most digestion and nutrient absorption happens.
• It has three parts: the duodenum, jejunum, and ileum. The first part, the duodenum, is where most of the digestion occurs.

Enzymes and Digestive Juices:

• Digestive juices from the pancreas and bile from the liver help break down food in the small intestine.
• Enzymes in the small intestine help break down proteins, fats, and carbohydrates into smaller molecules that the body can use.

Absorption of Nutrients:

• The inner surface of the small intestine has tiny finger-like structures called villi. These villi increase the surface area, allowing for maximum nutrient absorption.
• Nutrients from digested food pass through the walls of the villi into the bloodstream, which carries them to different parts of the body.

Completion of Digestion:

• By the time food reaches the end of the small intestine, digestion is mostly complete. Only waste and some water remain, which move on to the large intestine.

Importance for Energy:

• The nutrients absorbed in the small intestine provide the body with energy, help it grow, and keep it healthy.

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