Human Digestive System

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Diagram of the human digestive system.

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Digestive system diagram with labeled parts.

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Carbohydrates start digestion in the mouth with salivary amylase.

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Salivary amylase begins carbohydrate digestion in the mouth.

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Pancreatic amylase continues carbohydrate digestion in the small intestine.

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Pancreatic amylase continues the breakdown of carbohydrates in the small intestine.

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Bile salts emulsify fats in the small intestine.

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Emulsification of fats by bile salts occurs in the small intestine.

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Salivary glands produce saliva to moisten food.

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Saliva is produced by salivary glands to moisten food.

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The pancreas releases enzymes for digestion.

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Digestive enzymes are released by the pancreas.

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The gallbladder stores bile for digestion.

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Bile is stored in the gallbladder for digestion.

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Role of the gallbladder in digestion

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The gallbladder stores and releases bile to emulsify fats.

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Importance of the gut microbiome

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The gut microbiome is vital for digestion, vitamin production, immune support, and gut-brain communication.

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Mechanical digestion process

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Mechanical digestion involves breaking down food physically, with chewing, churning, and segmentation in the digestive tract.