WorksheetsCVS quiz - week 3 - action potentials
Total questions: 5
Worksheet time: 3mins
A and C show
SA node and Bundle of His
Bundle of His and Purkinje fibres
SA node and AV node
Which of the following is correct regarding intracellular calcium concentration?
Ca2+ falls to allow cardiomyocyte contraction during systole
Ca2+ rises to allow cardiomyocyte contraction during diastole
Ca2+ rises to allow cardiomyocyte contraction during systole
Ca2+ rises to allow cardiomyocyte relaxation during systole
B and D show
SA node and AV node
AV node and Purkinje fibres
Purkinje fibres and Bundle of His
SA node and Bundle of HIs
Which one of the following statements is correct ?
Noradrenaline speeds-up heart rate by making the pacemaker potential steeper
Acetylcholine speeds-up the heart rate by making the pacemaker potential shallower
Noradrenaline speeds-up heart rate by making the pacemaker potential shallower
Acetylcholine slows heart rate by making the pacemaker potential steeper
Which is correct regarding the resting membrane potential
Na+ concentration is higher outside the cell
K+ concentration is higher outside the cell
Na+ concentration is lower outside the cell
