Graphing Inequalities Worksheet - West Bridgford School Page 6
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84.
Paula is training for a marathon. When she runs, her heart beats faster than it does when she is
resting.
Complete the sentences, using words from the box.
blood
breathe
carbon dioxide
glucose
heat
nitrogen
oxygen
respire
When she is running, Paula‘s muscle activity increases. To do this, her muscle cells
................................................. at a faster rate to give her more energy. Her muscles need to
be supplied with ........................................... and ....................................................................
more quickly. Her heart beats faster to increase the flow of....................................................
which carries the products ................................................................................................ and
............................................................ away from her muscles.
(Total 6 marks)
5.
Regular exercise is important, as it helps to maintain an efficient supply of blood to the muscles,
the heart and the lungs. This is helped by an increase in the heart rate during exercise.
Explain why it is necessary for the heart rate to increase during exercise.
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(Total 4 marks)
West Bridgford School
6
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