281 - Pacemaker action potential (add)

Pacemaker action potential occurs in what nodes?

Describe Phase 0

Describe Phase 1

Describe Phase 2

Describe Phase 3

Describe Phase 4

In Phase 4, slow spontaneous ___________ ____________ due to If (“funny current”)

In Phase 4, ___________ decreases the rate of diastolic depolarization and decreases HR, while ___________ increases depolarization and increases HR.

In Phase 4, The________ of phase 4 in the SA
node determines _________

In Phase 4, Sympathetic stimulation increases the chance that If channels
are open and thus _________ _________