1. Health & Social Care • Unit 5
Learning outcome 2: Understanding the function of body systems associated with energy metabolism (Relevant criteria: P4, P5, M1, D2)
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2. The body needs energy to function. The process
Health & Social Care • Unit 5
Energy in the body
The body needs energy to function. The process
by which it gets this energy is called the
metabolic rate. This rate is affected by:
exercise
proportion of fat to muscle
genes you may have inherited.
© Owned by or under licence to Harcourt Education Ltd 2007.

3. Food (digestive system) Blood (cardiovascular system)
Health & Social Care • Unit 5
Powering the body
The body is powered by:
Food (digestive system)
Blood (cardiovascular system)
Air (respiratory system).
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4. The reactions in cells are powered by ATP (adenosine triposphate)
Health & Social Care • Unit 5
Reactions in the body
The reactions in cells are powered by ATP (adenosine triposphate)
Digested food creates glucose.
The glucose reacts with oxygen to create ATP.
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5. Metabolism involves two processes:
Health & Social Care • Unit 5
Metabolism
Metabolism involves two processes:
Anabolism which builds up new cells.
Catabolism which breaks down old cells.
The energy from catabolism is used to power anabolism.
Remember the two processes don’t happen at the same time!
© Owned by or under licence to Harcourt Education Ltd 2007.