Considering conduction rates in myocardial cells, which statement is TRUE?

Question

TuteeHUB · Accepted Answer

the duration of the action potential and refractory period in fast fibres is shorter than slow fibres

TuteeHUB · Answer

Perkinje fibres are subepicardial and are the largest fibres, 4-7 times the width of other fibres

TuteeHUB · Answer

Perkinje fibres are  fast fibres , and can conduct a wave of depolarisation at a speed of 4m/sec

TuteeHUB · Answer

initial depolarisation occurs in fast fibres with a rapid influx of Ca2+ ions from the sarcoplasmic reticulum

TuteeHUB · Answer

none of the above statements are true

1.	Considering conduction rates in myocardial cells, which statement is TRUE?
A.	Perkinje fibres are subepicardial and are the largest fibres, 4-7 times the width of other fibres
B.	Perkinje fibres are fast fibres , and can conduct a wave of depolarisation at a speed of 4m/sec
C.	the duration of the action potential and refractory period in fast fibres is shorter than slow fibres
D.	initial depolarisation occurs in fast fibres with a rapid influx of Ca2+ ions from the sarcoplasmic reticulum
E.	none of the above statements are true
Answer» C. the duration of the action potential and refractory period in fast fibres is shorter than slow fibres

Discussion