The Digestive System. The Digestive System. 4 steps for processing nutrients from food Ingestion Digestion Absorption Elimination. Ingestion & Digestion. Ingestion: Eating or drinking Digestion: the breaking down of food into molecules that are small enough to be absorbed by the body
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4 steps for processing nutrients from food
Ingestion: Eating or drinking
Digestion: the breaking down of food into molecules that are small enough to be absorbed by the body
Mechanical digestion: Chewing and grinding food into smaller pieces, increasing the surface area
Chemical digestion: Breaking chemical bonds of macromolecules (carbs, proteins and lipids) into monomers (sugars, amino acids, glycerol & fatty acids)
Accessory Glands & Organs
Chewed up food is now called a bolus
I ate too much…I’m STUFFED!