B6.2 Alimentary canal Flashcards

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1
Q

Define ingestion

A

as the taking of substances, e.g. food and drink, into the body through the mouth

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2
Q

Define digestion

A

as the breakdown of large, insoluble food molecules into small, water-soluble molecules using mechanical and chemical processes

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3
Q

Define mechanical digestion

A

mechanical digestion as the breakdown of food into smaller pieces without chemical change to the food molecules

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4
Q

Define chemical digestion

A

chemical digestion as the breakdown of large, insoluble molecules into small, soluble molecules

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5
Q

Define absorption

A

absorption as the movement of digested food molecules through the wall of the intestine into the blood

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6
Q

Define assimilation

A

as the movement of digested food molecules into the cells of the body where they are used, becoming part of the cells

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7
Q

Define egestion

A

egestion as passing out of food that has not been digested, as faeces, through the anus

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