Digestion Nutrients and Digestion. Key Terms Digestion: Process that breaks down food to release nutrients into the body Absorption : Movement of nutrients.

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Presentation transcript:

Digestion Nutrients and Digestion

Key Terms Digestion: Process that breaks down food to release nutrients into the body Absorption : Movement of nutrients into the bloodstream

Mouth Mechanical phase Teeth Chew Saliva breaks down food 1 st step in digestion

Esophagus 10 – 12 inches in length Connects mouth to stomach Peristalsis – the wavelike movements that push food to stomach Digestion becomes automatic/involuntary

Stomach (holding tank) Pouch – holds 4 cups food Gastric juices/acids are manufactured Begin to break down food into Chyme Order of digestion: – Carbs 1-2 hours – Protein 3-6 hours – Fats – 7 hours

Small Intestine Food is worked on by bile/pancreatic acid and intestinal juices Carbs – glucose Protein – amino acids Fats – fatty acids Villi fingerlike sponges – absorb the nutrients

Large Intestine Water is removed Waste dries out Waste leaves body through anus (Smelly World)