HMS, BM EQ-Bank 57

Analyse how the structure of the respiratory and circulatory systems work together to support performance in a rock climber during a difficult ascent. (8 marks)

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Sample Answer

Bronchi branching increases surface area for gas exchange
Capillary networks around alveoli optimise oxygen transfer
Heart chambers coordinate blood flow with breathing
Intercostal muscles expand ribcage as intensity increases
Blood vessels in arms dilate to meet grip demands
Sustained climbing requires matched system efficiency
Recovery between moves allows system adjustment
Both systems adapt to changing body positions
Performance limited if either system reaches capacity

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Sample Answer

Bronchi branching increases surface area for gas exchange
Capillary networks around alveoli optimise oxygen transfer
Heart chambers coordinate blood flow with breathing
Intercostal muscles expand ribcage as intensity increases
Blood vessels in arms dilate to meet grip demands
Sustained climbing requires matched system efficiency
Recovery between moves allows system adjustment
Both systems adapt to changing body positions
Performance limited if either system reaches capacity