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Paper 3Theory (Core)2 marks
The nervous and hormonal systems both control body functions but differ in how quickly they respond and how long their effects last.
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Control Systems
The nervous system sends electrical impulses rapidly to specific parts of the body, causing quick and short-lived responses. The hormonal system releases hormones into the blood, which travel more slowly but cause longer-lasting effects.
- a[2]
Compare the speed of response of the nervous system with that of the hormonal system.
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