IB Biology C3.1.14 Heart rate feedback control
IB Biology C3.1.14 Heart rate feedback control
Practise explaining feedback control of heart rate through the medulla, epinephrine and sinoatrial node signals during exercise.
How this is tested
- interpret heart-rate graphs during and after exercise using control signals
- explain how the sinoatrial node coordinates atrial and ventricular contraction
- distinguish medulla nerve impulses from epinephrine effects on heart rate