What is the significance of the thin walls of the villi in the small intestine?
Diffusion is quicker, there is a lacteal in the villus that carries the broken down fats- now glycerol and fatty acids- towards the blood system later on.
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5
What is INGESTION?
Action whereby food is taken in to the alimentary canal.
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10
What is the ALIMENTARY CANAL?
The whole passage along which food passes through the body from mouth to anus during digestion.
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10
Energy in food is measured in what unit?
Kilojoules (kJ).
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10
The picture illustrates which process?
Peristalsis
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20
Name 3 examples of digestive juices.
Saliva, Gastric, Pancreatic, Intestinal
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15
Name the two types of digestion.
Physical Digestion and Chemical Digestion
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10
What does glucagon do to the blood sugar level?
Raises
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Name the malnutrition whereby someone does not eat in spite of food being available to them.
Anorexia Nervosa
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10
Alcohol, drugs, solvents, pesticides and heavy metals are broken down in which organ?
Liver
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What are proteins broken down into?
Amino acids
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Name 5 organs that make up the alimentary canal.
Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus.