A Level Biology Edexcel: Topic 5 - 8: nervous control of heart rate when CO2/pH changes

Question

nervous control of heart rate when CO2/pH changes

seremi amune · Accepted Answer

CO2 in blood increases/pH decreases
chemoreceptors detect the change 
a signal is sent to the CV control centre in the medulla 
a signal is sent by the sympathetic nerve 
SAN depolarises 
heart rate increases

A Level Biology Edexcel: Topic 5 - 8

Nervous control of heart rate when CO2/pH changes

CO2 in blood increases/pH decreases chemoreceptors detect the change a signal is sent to the CV control centre in the medulla a signal is sent by the sympathetic nerve SAN depolarises heart rate increases

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