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Neurons have a ___ (AKA electrical potential) made by the difference in charged particles across that membrane.
inside the cell are large anions, specifically ____, which contribute to the ICF negativity
F (stimuli may depolarize and generate local potentials w/o generating APs)
[T,F] If a stimuli is strong enough to open Na-gated channels, it is strong enough to become an AP rather than just a local potential
___ potentials are achieved through gated channels, while ___ are achieved through voltage gated channels
If enough local potentials spread to the ___ ___ (the axon hillock area), it activates voltage gated channels and an AP fires
peek voltage during an AP is ___mV. This is when the cell is very depolarized and Na+ channels finally close.
Occurs b/c K+ channels are slow to close, allowing K+ to flow out for a bit longer down its concentration gradient (making ICF super negative)
The refractory period is broken into the ____ refractory period and the ___ refractory period
during the ___ ___ period, it's impossible to generate another AP b/c Na+ channels are still open and the former AP is still going.
during the ___ ___ period, it takes a very intense stimulus to generate another AP since the K+ channels are still open
during the absolute refractory period, it's impossible to generate another AP since the ___ channels are still open
during the relative refractory period, it takes a very intense stimulus to generate another AP since the ___ channels are still open
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