The depolarisation of cardiac muscle cells is characterised by:

Question

TuteeHUB · Accepted Answer

calcium efflux during the plateau phase

TuteeHUB · Answer

a slow depolarisation, a plateau then a rapid repolarisation

TuteeHUB · Answer

initial depolarisation due to a slow Na+ influx

TuteeHUB · Answer

repolarisation due to K+ efflux through two types of K+ channels

TuteeHUB · Answer

a plateau phase due to slowly opening Na+ channels

1.	The depolarisation of cardiac muscle cells is characterised by:
A.	a slow depolarisation, a plateau then a rapid repolarisation
B.	initial depolarisation due to a slow Na+ influx
C.	repolarisation due to K+ efflux through two types of K+ channels
D.	a plateau phase due to slowly opening Na+ channels
E.	calcium efflux during the plateau phase
Answer» E. calcium efflux during the plateau phase

Discussion