Responding to exercise (AQA GCSE Biology): Flashcards
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Practise the cards
15 cards from this deck
Why muscles need more energy during exercise
Why muscles need more energy during exercise
To keep contracting and moving body
3 body changes during exercise
3 body changes during exercise
Heart rate, breathing rate & breath volume increase
Why heart rate increases during exercise
Why heart rate increases during exercise
Transports O2 & glucose faster, removes CO2 efficiently
When anaerobic respiration occurs
When anaerobic respiration occurs
Intense exercise when not enough oxygen reaches muscles
Waste product of anaerobic respiration
Waste product of anaerobic respiration
Lactic acid
Effect of lactic acid buildup in muscles
Effect of lactic acid buildup in muscles
Causes fatigue, muscles can't contract properly
What oxygen debt means
What oxygen debt means
Extra O2 needed after exercise to break down lactic acid
Why breathing stays heavy after exercise
Why breathing stays heavy after exercise
To repay oxygen debt & break down lactic acid
What happens to glucose in anaerobic respiration
What happens to glucose in anaerobic respiration
Not fully broken down, less energy released
How to calculate heart rate from pulse count
How to calculate heart rate from pulse count
Count pulse for 15 seconds, multiply by 4
Device to measure breath volume
Device to measure breath volume
Spirometer
What muscles need more of during exercise
What muscles need more of during exercise
Oxygen and glucose
Why breathing rate increases during exercise
Why breathing rate increases during exercise
To get more oxygen to muscles for respiration
Result of anaerobic respiration in muscles
Result of anaerobic respiration in muscles
Less energy released & lactic acid builds up
How to measure breathing rate
How to measure breathing rate
Count breaths per minute