Responding to exercise (AQA GCSE Biology Combined Science): Flashcards
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Practise the cards
10 cards from this deck
What do muscle cells need more of during exercise?
What do muscle cells need more of during exercise?
Oxygen and glucose
Three body changes during exercise
Three body changes during exercise
Heart rate, breathing rate, and breath volume all increase
Why heart rate increases during exercise
Why heart rate increases during exercise
Pumps blood faster to transport O2 & glucose, remove CO2
Why breathing rate & depth increase during exercise
Why breathing rate & depth increase during exercise
More O2 enters lungs, more CO2 removed
What oxygen debt is
What oxygen debt is
When muscles can't get enough O2 for aerobic respiration
Type of respiration during oxygen debt
Type of respiration during oxygen debt
Anaerobic respiration
What builds up during anaerobic respiration
What builds up during anaerobic respiration
Lactic acid
Effect of lactic acid on muscles
Effect of lactic acid on muscles
Makes muscles tired and stop working efficiently
Why you breathe heavily after exercise
Why you breathe heavily after exercise
To break down lactic acid (pay back oxygen debt)
How to measure heart rate from pulse
How to measure heart rate from pulse
Count pulse for 15 seconds, then multiply by 4