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Bella N5

U2 KA 7 Absorption of Materials

QuestionAnswer
Villi functional sub-unit of the small intestine. Good surface for diffusion; thin walls, large surface area, moist and good transport system.
Small Intestine digestion is completed here and the products of digestion are absorbed
Lacteal carries the products of fat digestion (fatty acids and glycerol) to the lymphatic system
Glycerol Absorbed into lacteal of villus
Fatty acids Absorbed into lacteal of villus
Glucose Absorbed into blood capillary of villus
Amino acids Absorbed into blood capillary of villus
What 3 features are always found in structures where absorption takes place? Walls are one cell thick, they have a large surface area, they have a good blood supply.
What are the structures in the lungs where gas exchange takes place called? Alveoli
Digestive system breaks down large insoluble molecules to small soluble molecules for absorption in small intestine
Created by: nscobie
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