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Action Potential 7 Steps
This deck covers the seven key steps involved in the generation and propagation of an action potential, focusing on changes in ion channel activity and membrane potential.
STEP 1 Threshold stimulus to -55mv
Stimulus
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Key Terms
Term
Definition
STEP 1 Threshold stimulus to -55mv
Stimulus
STEP 2 Na+ channels open
Channel open
STEP 3 Na+ ions flood in
flood in
STEP 4 At +30mv, Na channels close and K ions channels open
K ions
STEP 5 K floods out of the cell
Out of cell
STEP 6 Hyperpolarization to -90mv
Hyper
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| Term | Definition |
|---|---|
STEP 1 Threshold stimulus to -55mv | Stimulus |
STEP 2 Na+ channels open | Channel open |
STEP 3 Na+ ions flood in | flood in |
STEP 4 At +30mv, Na channels close and K ions channels open | K ions |
STEP 5 K floods out of the cell | Out of cell |
STEP 6 Hyperpolarization to -90mv | Hyper |
STEP 7 K channels close and the resting potential is re-established at -70 | Re-established |