# Explain how the body uses hormones to return blood glucose concentration to the normal level after a person has carried out vigorous exercise.

> WJEC GCSE Biology (Wales) — 2.5.2 Hormonal coordination · Explain · 4 marks

> During vigorous exercise, muscles use glucose rapidly as a source of energy. This causes blood glucose concentration to fall below the normal level.

## Mark scheme (4 marks)

1. The pancreas detects the fall in blood glucose concentration
2. The pancreas secretes / releases glucagon
3. Glucagon causes the liver to convert glycogen into glucose
4. Glucose is released into the blood, returning blood glucose concentration to the normal level

## Key terms

- [blood glucose concentration](https://www.gradenine.co.uk/glossary/blood-glucose-concentration)

## Related

- [Revision notes for WJEC GCSE Biology (Wales)](https://www.gradenine.co.uk/learn)
- [How to answer "Explain" questions](https://www.gradenine.co.uk/tools/command-word-cheatsheet)
- [Practice this with AI marking (free)](https://www.gradenine.co.uk/start)

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Source: [GradeNine](https://www.gradenine.co.uk/q/explain-how-the-body-uses-hormones-9bd31ee5) · Published by Druglandscape Ltd.