Human Health And Systems Flashcards

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1
Q

Ingestion/eating

A

Food is taken in by the body.

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2
Q

Digestion

A

Food is broken down.

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3
Q

Absorption

A

Digested food is passed through the blooodstream

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4
Q

Assimilation

A

Using the food in the cells of the body

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5
Q

Elimination

A

Getting rid of undigested food

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6
Q

Physical digestion

A

Taking large pieces of food and breaking them down into smaller pieces. Happens in the mouth (teeth)
Stomach (churning)

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7
Q

Chemical digestion

A

Involves the use of chemicals called enzymes to break down food
• Enzymes are chemicals that speed up reactions without being used up in the reaction (catalyst)

• Enzymes act on a substrate and
breaks it down into a product
Example: substrate starch, enzyme = amylase (saliva),
product = maltose (sugar)

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8
Q

Chemical digestion

A

Amylase in mouth
Enzymes in the
stomach
Most chemical digestion happens in small intestine
Bile made in liver to break down fat
Pancreas makes digestive juices which contain enzymes

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