The downward slope - Conduction of the heart - SAN-Generation of the signal
6 important questions on The downward slope - Conduction of the heart - SAN-Generation of the signal
How is the signal that is generated at the SAN travel to the cardiomyocytes of the atria?
What is the role of the SAN?
What is the resting membrane potential of the SAN?
-85 to -90mv in ventricular muscle fibre.
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Which channels are involved in the generation of the impulse at the SAN?
2. @ -40mv: Ca2+ ions move into the cell through the T-type VGCC and L-channels
3. @+15mv: the K+ voltage-gated channels fully open. K+ flows in and causes repolarisation.
Where do the SAN fibres connect?
Where is the SAN located?
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