Describe how the digestive and circulatory systems work together to support a 90-minute soccer game. (4 marks)
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Sample Answer
Pre-game:
- Digestive enzymes break down pre-game meal in stomach and small intestine.
- Blood flow increases to digestive organs to enhance nutrient absorption.
- Circulatory system transports glucose and nutrients to muscle glycogen stores.
Early Game:
- As the game begins, blood flow shifts from digestive organs to muscles as stored energy is mobilised.
- Digestive absorption slows while stomach empties.
- Circulation delivers stored glycogen and oxygen to working muscles.
- Heart rate elevates to support increased delivery demands.
Mid-Late Game:
- Digestive system maintains steady blood glucose levels through continued absorption.
- Circulatory system manages hydration through fluid distribution.
- Both systems coordinate waste removal while sustaining energy supply.
- Blood flow patterns optimise nutrient delivery to fatigued muscles.
Show Worked Solution
Sample Answer
Pre-game:
- Digestive enzymes break down pre-game meal in stomach and small intestine.
- Blood flow increases to digestive organs to enhance nutrient absorption.
- Circulatory system transports glucose and nutrients to muscle glycogen stores.
Early Game:
- As the game begins, blood flow shifts from digestive organs to muscles as stored energy is mobilised.
- Digestive absorption slows while stomach empties.
- Circulation delivers stored glycogen and oxygen to working muscles.
- Heart rate elevates to support increased delivery demands.
Mid-Late Game:
- Digestive system maintains steady blood glucose levels through continued absorption.
- Circulatory system manages hydration through fluid distribution.
- Both systems coordinate waste removal while sustaining energy supply.
- Blood flow patterns optimise nutrient delivery to fatigued muscles.