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IB Biology C3.1.12 Epinephrine (adrenaline)

IB Biology C3.1.12 Epinephrine (adrenaline)
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise linking epinephrine release to body responses during action, including faster heartbeat, blood flow to muscles and stimulus recognition.

How this is tested

  • explain how epinephrine helps intense muscle contraction during activity
  • state the effect of epinephrine on heart rate and the sinoatrial node
  • choose the stimulus most likely to trigger epinephrine release in context
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