Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
8 Cards in this Set
- Front
- Back
|
resting state
|
The electrical potential across the membrane is known as the resting membrane potential, -90 mV for most cardiac cells, and -70 mV at the SA and AV node cells.
|
|
|
depolarization
|
Upon a sufficient voltage stimulus, channels allow for movement of ions across the cell membrane.
|
|
|
repolarization
|
When the inside of the sell is again negative with respect to the outside.
|
|
|
Phase 0
|
Depolarization. Fast Na+ in.
|
|
|
Phase 1
|
Early Rapid Repolarization. K+ out, slow Na+ in.
|
|
|
Phase 2
|
Slow Repolarization. Ca++ in, K+ out, slow Na+ in.
|
|
|
Phase 3
|
Terminal Phase of Rapid Repolarization. Slow Na+ in.
|
|
|
Phase 4
|
Resting State. Na+ out, K+ in.
|
