B2 4.2: The effect of exercise on the body.

All information was taken directly from the AQA revision guide with only the key points from B2 4.2.

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What do your muscles need when you exercise?
More energy so that they can contract.
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What do you need to increase the rate of for aerobic respiration?
The rate at which oxygen and glucose reach the muscles. You need to remove the extra waste produced carbon dioxide more quickly.
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What is aerobic respiration?
Release of energy from glucose using air.
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What happens as the heart rate increases? Why?
The blood vessels supplying the muscles dilate, allowing more blood containing oxygen and glucose to reach the muscles.
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What increase in exercise?
Heart rate, breathing rate and depth of each breath.
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Why does your breathing rate and depth of breath increase?
Allows a greater uptake of oxygen and release of carbon dioxide.
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How do muscles store glucose?
As glycogen
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What happens to glycogen in exercise?
It is converted back to glucose.
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Other cards in this set

Card 2

Front

What do you need to increase the rate of for aerobic respiration?

Back

The rate at which oxygen and glucose reach the muscles. You need to remove the extra waste produced carbon dioxide more quickly.

Card 3

Front

What is aerobic respiration?

Back

Preview of the front of card 3

Card 4

Front

What happens as the heart rate increases? Why?

Back

Preview of the front of card 4

Card 5

Front

What increase in exercise?

Back

Preview of the front of card 5
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