Name: Date: reading (10 marks) 1



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WRITING TASK 10 MODEL ANSWER

Write a four-paragraph description of this flow chart, explaining how the body responds to 

changes in temperature.

The flow chart shows how body temperature in human beings is regulated in an area of the brain called 

the hypothalamus.

When the body temperature rises above the ideal temperature of 37 degrees Celsius, messages are 

sent from heat sensors in the skin to the hypothalamus. This information is then processed, triggering 

three major chemical processes. First of all sweating increases so that air can cool the skin down. Then 

blood is sent to the skin where it is cooler and the metabolism slows. The body then loses heat and a 

signal is sent to the brain to stop the processes.

When the temperature of the body falls below the ideal temperature of 37 degrees Celsius, the 

hypothalamus is alerted by heat sensors in the skin and three different processes begin. Shivering 

starts, blood is diverted away from the skin and the metabolism increases. As soon as the body gains 

heat again, a signal is sent back to the brain, which then stops these processes.

The flow chart shows how the brain controls two of the many complex actions in our body without our 

knowledge.

ADDITIONAL WRITING TASK 10

Describe the various stages from discovering an illness to returning home from hospital.



 

 

 

 

 

 

 

 

 

 

 

 

 

Document Outline

  • Review tests
  • Model answers and additional writing tasks

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