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Revise > Cvs Marrow > Flashcards

Cvs Marrow Flashcards

1
Q

Heart rate is determine by

A

Slope of phase 4 in SA node action potential

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2
Q

Which channel are permanently inactivated in pacemaker potential

A

Fast voltage gated Na channel

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3
Q

Why are fast gated Na channel permanently inactivated in pacemaker potential

A

Because of less negative resting potential of pacemakers cells

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